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Infosys aptitude

1 sections, 96 questions

Practice Questions

96 questions

Question 1

Profit Percentage

Problem

A shopkeeper sells an item at 20% profit. If he had bought it at 10% less and sold it for ₹40 less, he would have gained 25%. Find the cost price.

Solution

Let CP = ₹100

SP at 20% profit = ₹120
New CP (10% less) = ₹90
New SP = ₹120 - ₹40 = ₹80
Profit = (80-90)/90 × 100 = -11.11% (loss)

Using formula: CP = (Difference in SP × 100) / (Difference in profit %)
CP = (40 × 100) / (25 - 20) = ₹800

Question 2

Consumption Reduction

Problem

The price of a product is increased by 25%. By what percentage should the consumption be reduced so that the expenditure remains the same?

Solution

Let original price = ₹100, consumption = 100 units

New price = ₹125
Original expenditure = 100 × 100 = ₹10,000
New consumption = 10,000 / 125 = 80 units
Reduction = (100 - 80) / 100 × 100 = 20%

Question 3

Overall Profit/Loss

Problem

A man sells two articles for ₹4000 each, one at 20% profit and the other at 20% loss. Find his overall profit or loss percentage.

Solution

For first article: CP₁ = 4000 / 1.20 = ₹3333.33
For second article: CP₂ = 4000 / 0.80 = ₹5000
Total CP = ₹8333.33
Total SP = ₹8000
Loss = (8333.33 - 8000) / 8333.33 × 100 = 4%

Question 4

Successive Discounts

Problem

A shopkeeper offers two successive discounts of 20% and 15%. What is the effective discount percentage?

Solution

Let MP = ₹100

After first discount: 100 - 20% = ₹80
After second discount: 80 - 15% = ₹68
Effective discount = (100 - 68) / 100 × 100 = 32%

Question 5

Combined Work

Problem

A can complete a work in 12 days, B in 15 days. They work together for 4 days, then A leaves. In how many days will B complete the remaining work?

Solution

A's 1 day work = 1/12
B's 1 day work = 1/15
Together in 1 day = 1/12 + 1/15 = 9/60 = 3/20
Work done in 4 days = 4 × 3/20 = 12/20 = 3/5
Remaining work = 1 - 3/5 = 2/5
B will complete in = (2/5) / (1/15) = 6 days

Question 6

Men Leaving

Problem

15 men can complete a work in 20 days. After 5 days, 5 men leave. How many more days will it take to complete the work?

Solution

Total work = 15 × 20 = 300 man-days
Work done in 5 days = 15 × 5 = 75 man-days
Remaining work = 300 - 75 = 225 man-days
Remaining men = 15 - 5 = 10
Days required = 225 / 10 = 22.5 days

Question 7

Efficiency

Problem

A is twice as efficient as B. If A can complete a work in 10 days, how long will it take if both work together?

Solution

A's efficiency = 2 units/day
B's efficiency = 1 unit/day
Total work = 2 × 10 = 20 units
Together efficiency = 2 + 1 = 3 units/day
Time = 20 / 3 = 6.67 days

Question 8

Train & Platform

Problem

A train crosses a platform in 30 seconds and a man standing on the platform in 18 seconds. If the speed of the train is 60 km/hr, find the length of the platform.

Solution

Speed = 60 km/hr = 60 × 5/18 = 50/3 m/s
Length of train = 50/3 × 18 = 300 m
Let platform length = x m
(300 + x) / (50/3) = 30
300 + x = 500
x = 200 m

Question 9

Relative Speed

Problem

Two trains of lengths 200m and 300m are moving in opposite directions at speeds of 50 km/hr and 40 km/hr. Find the time taken to cross each other.

Solution

Relative speed = 50 + 40 = 90 km/hr = 90 × 5/18 = 25 m/s
Total distance = 200 + 300 = 500 m
Time = 500 / 25 = 20 seconds

Question 10

Milk & Water

Problem

In a mixture of 60 liters, the ratio of milk and water is 2:1. How much water should be added to make the ratio 1:2?

Solution

Current: Milk = 40L, Water = 20L
Let x liters water be added
40 / (20 + x) = 1/2
80 = 20 + x
x = 60 liters

Question 11

Doubling Time

Problem

A sum of money doubles itself in 5 years at simple interest. In how many years will it become 4 times?

Solution

If money doubles in 5 years, rate = 100/5 = 20% p.a.
To become 4 times, interest needed = 300%
Time = 300/20 = 15 years

Question 12

Compound Interest

Problem

Find the compound interest on ₹10,000 for 2 years at 10% per annum, compounded annually.

Solution

Amount = P(1 + r/100)ⁿ = 10000(1.1)² = ₹12,100
CI = 12,100 - 10,000 = ₹2,100

Question 13

Average Age

Problem

The average age of a class of 30 students is 20 years. If the teacher's age is included, the average becomes 21 years. Find the teacher's age.

Solution

Total age of 30 students = 30 × 20 = 600
Total age including teacher = 31 × 21 = 651
Teacher's age = 651 - 600 = 51 years

Question 14

Ratio Problems

Problem

The ratio of boys to girls in a class is 3:2. If 5 more girls join, the ratio becomes 3:4. Find the initial number of students.

Solution

Let boys = 3x, girls = 2x

After: 3x / (2x + 5) = 3/4
12x = 6x + 15
6x = 15
x = 2.5
Initial students = 5x = 12.5 ≈ 13

Question 15

LCM and HCF

Problem

Find the LCM of 12, 18, and 24.

Solution

12 = 2² × 3
18 = 2 × 3²
24 = 2³ × 3
LCM = 2³ × 3² = 8 × 9 = 72

Question 16

Divisibility

Problem

What is the smallest number that must be added to 1056 to make it divisible by 23?

Solution

1056 ÷ 23 = 45 remainder 21
Number to add = 23 - 21 = 2

Question 17

Remainder Theorem

Problem

Find the remainder when 2³¹ is divided by 5.

Solution

Pattern: 2¹ mod 5 = 2, 2² mod 5 = 4, 2³ mod 5 = 3, 2⁴ mod 5 = 1

Cycle repeats every 4 powers
31 ÷ 4 = 7 remainder 3
Remainder = 2³ mod 5 = 3

Question 18

Age Problems

Problem

The sum of ages of father and son is 50 years. Five years ago, the father was 5 times as old as the son. Find the present age of the son.

Solution

Let son's age = x, father's age = 50 - x

5 years ago: (50 - x - 5) = 5(x - 5)
45 - x = 5x - 25
6x = 70
x ≈ 12 years

Question 19

Permutations

Problem

In how many ways can 5 people be arranged in a row?

Solution

Number of arrangements = 5! = 5 × 4 × 3 × 2 × 1 = 120

Question 20

Combinations

Problem

In how many ways can 3 students be selected from a group of 10 students?

Solution

C(10,3) = 10! / (3! × 7!) = (10 × 9 × 8) / (3 × 2 × 1) = 120

Question 21

Square Pattern

Problem

Find the next number in the series: 2, 6, 12, 20, 30, ?

Solution

Pattern: n × (n+1) where n = 1, 2, 3, 4, 5...

1×2=2, 2×3=6, 3×4=12, 4×5=20, 5×6=30
Next: 6×7 = 42

Question 22

Pattern Series

Problem

Find the missing number: 5, 11, 23, 47, 95, ?

Solution

Pattern: Each number = previous × 2 + 1

5×2+1=11, 11×2+1=23, 23×2+1=47, 47×2+1=95
Next: 95×2+1 = 191

Question 23

Cube Pattern

Problem

Find the next number: 1, 8, 27, 64, 125, ?

Solution

Pattern: n³ where n = 1, 2, 3, 4, 5...

1³=1, 2³=8, 3³=27, 4³=64, 5³=125
Next: 6³ = 216

Question 24

Letter Shifting

Problem

If "COMPUTER" is coded as "EQORWVGT", how is "KEYBOARD" coded?

Solution

Pattern: Each letter is shifted by +2 positions

C→E, O→Q, M→O, P→R, U→W, T→V, E→G, R→T
KEYBOARD: K→M, E→G, Y→A, B→D, O→Q, A→C, R→T, D→F

Question 25

Simple Coding

Problem

In a certain code, "MONEY" is written as "NPOFZ". How is "BANK" written in that code?

Solution

Each letter is shifted by +1

M→N, O→P, N→O, E→F, Y→Z
BANK: B→C, A→B, N→O, K→L

Question 26

Family Relations

Problem

Pointing to a man, a woman said, "His mother is the only daughter of my mother." How is the woman related to the man?

Solution

"Only daughter of my mother" = the woman herself
"His mother is the woman" = the woman is the man's mother

Question 27

Sibling Relations

Problem

Pointing to a photograph, a man said, "She is the daughter of my father's only son." How is the woman related to the man?

Solution

"My father's only son" = the man himself
"She is the daughter of the man" = the woman is the man's daughter

Question 28

Multiple Turns

Problem

A person walks 5 km North, then 3 km East, then 2 km South. How far is he from starting point?

Solution

Net North = 5 - 2 = 3 km
Net East = 3 km
Distance = √(3² + 3²) = √18 = 3√2 km ≈ 4.24 km

Question 29

Clockwise Turns

Problem

A person walks 6 km East, then 8 km North. How far is he from the starting point?

Solution

Distance = √(6² + 8²) = √(36 + 64) = √100 = 10 km

Question 30

Circular Arrangement

Problem

Five friends A, B, C, D, E are sitting in a row. A is not at either end. B is to the right of A. C is between A and D. Who is sitting at the rightmost position?

Solution

A is not at end, so A is at 2, 3, or 4
B is to right of A
C is between A and D
Arrangement: E, A, C, D, B

Question 31

Technology Passage

Problem

Passage: Artificial Intelligence (AI) has revolutionized various industries, from healthcare to finance. Machine learning algorithms can now diagnose diseases with higher accuracy than human doctors in some cases. However, concerns about job displacement and ethical implications remain.

Questions:

Question 32

Subject-Verb Agreement

Problem

Identify the error in: "Neither of the students were present in the class."

Solution

Error: Subject-verb agreement

"Neither" is singular, so verb should be "was"
Correct: "Neither of the students was present in the class."

Question 33

Articles

Problem

Choose the correct sentence:
a) He is a honest man
b) He is an honest man
c) He is the honest man

Solution

"Honest" starts with a vowel sound, so "an" is used.

Question 34

Synonyms

Problem

Find synonym of "Abundant"

Options: A) Scarce B) Plentiful C) Rare D) Limited

Answer: B) Plentiful

Question 35

Antonyms

Problem

Find antonym of "Benevolent"

Options: A) Kind B) Generous C) Malevolent D) Charitable

Answer: C) Malevolent

Question 36

Parallelism

Problem

Choose the correct sentence:
a) She likes reading, writing, and to dance
b) She likes reading, writing, and dancing
c) She likes to read, writing, and dancing

Solution

Parallel structure requires same form: all gerunds or all infinitives. Option b maintains parallelism.

Question 37

Prepositions

Problem

"She is allergic _____ peanuts."

Options: a) to b) from c) with d) by

Solution

"Allergic to" is the correct prepositional phrase.

Question 38

Common Idioms

Problem

What does "Hit the nail on the head" mean?

Options:
a) To make a mistake
b) To be exactly right
c) To cause trouble
d) To work hard

Answer: b) To be exactly right

Question 39

Logical Flow

Problem

Arrange the sentences:

Therefore, regular exercise is essential
Physical activity improves mental health
Studies show that exercise reduces stress
It also enhances cognitive function

Solution

Logical order: 3 (evidence) → 2 (benefit) → 4 (additional benefit) → 1 (conclusion)

Question 40

Conjunctions

Problem

"She studied hard _____ she could pass the exam."

Options: a) so that b) because c) although d) unless

Solution

"So that" indicates purpose, which fits the context.

Question 41

Time & Work

Problem

A can do a work in 8 days and B can do the same work in 12 days. In how many days will they complete the work together?

Solution

A's 1 day work = 1/8
B's 1 day work = 1/12
Together = 1/8 + 1/12 = 5/24
Time = 24/5 = 4.8 days

Question 42

Number System

Problem

Find the HCF of 24 and 36.

Solution

24 = 2³ × 3
36 = 2² × 3²
HCF = 2² × 3 = 4 × 3 = 12

Question 43

Percentage

Problem

What is 25% of 200?

Solution

25% of 200 = (25/100) × 200 = 50

Question 44

Ratio

Problem

Divide ₹1200 in the ratio 2:3:5.

Solution

Total parts = 2 + 3 + 5 = 10
First part = (2/10) × 1200 = ₹240
Second part = (3/10) × 1200 = ₹360
Third part = (5/10) × 1200 = ₹600

Question 45

Speed & Distance

Problem

A train 150m long passes a platform 200m long in 14 seconds. Find the speed of the train.

Solution

Total distance = 150 + 200 = 350 m
Time = 14 seconds
Speed = 350/14 = 25 m/s = 25 × 18/5 = 90 km/hr

Question 46

Interest

Problem

At what rate of simple interest will ₹5000 amount to ₹6000 in 4 years?

Solution

Interest = 6000 - 5000 = ₹1000
Rate = (I × 100) / (P × T) = (1000 × 100) / (5000 × 4) = 5%

Question 47

Compound Interest

Problem

Find the compound interest on ₹8000 for 3 years at 5% per annum, compounded annually.

Solution

Amount = P(1 + r/100)ⁿ = 8000(1.05)³ = ₹9261
CI = 9261 - 8000 = ₹1261

Question 48

Profit Percentage

Problem

A shopkeeper marks an item 30% above cost price and gives a discount of 10%. Find his profit percentage.

Solution

Let CP = ₹100
Marked price = 100 + 30% = ₹130
Discount = 10% of 130 = ₹13
Selling price = 130 - 13 = ₹117
Profit = 117 - 100 = ₹17
Profit % = (17/100) × 100 = 17%

Question 49

Work Problem

Problem

A, B, and C can complete a work in 10, 15, and 20 days respectively. If they work together, in how many days will they complete the work?

Solution

A's 1 day work = 1/10
B's 1 day work = 1/15
C's 1 day work = 1/20
Together = 1/10 + 1/15 + 1/20 = (6+4+3)/60 = 13/60
Time = 60/13 = 4.62 days

Question 50

Speed Problem

Problem

A person covers a certain distance at 40 km/hr and returns at 60 km/hr. Find the average speed.

Solution

Average speed = 2ab/(a+b) = (2 × 40 × 60)/(40+60) = 4800/100 = 48 km/hr

Question 51

Number Series

Problem

Find the next number in the series: 2, 6, 12, 20, 30, ?

Solution

Pattern: n × (n+1) where n = 1, 2, 3, 4, 5...

1×2=2, 2×3=6, 3×4=12, 4×5=20, 5×6=30
Next: 6×7 = 42

Question 52

Pattern Series

Problem

Find the missing number: 5, 11, 23, 47, 95, ?

Solution

Pattern: Each number = previous × 2 + 1

5×2+1=11, 11×2+1=23, 23×2+1=47, 47×2+1=95
Next: 95×2+1 = 191

Question 53

Complex Series

Problem

Find the missing number: 3, 7, 15, 31, 63, ?

Solution

Pattern: Each number = previous × 2 + 1

3×2+1=7, 7×2+1=15, 15×2+1=31, 31×2+1=63
Next: 63×2+1 = 127

Question 54

Letter Shifting

Problem

If "COMPUTER" is coded as "EQORWVGT", how is "KEYBOARD" coded?

Solution

Pattern: Each letter is shifted by +2 positions

C→E, O→Q, M→O, P→R, U→W, T→V, E→G, R→T
KEYBOARD: K→M, E→G, Y→A, B→D, O→Q, A→C, R→T, D→F

Question 55

Simple Coding

Problem

In a certain code, "MONEY" is written as "NPOFZ". How is "BANK" written in that code?

Solution

Each letter is shifted by +1

M→N, O→P, N→O, E→F, Y→Z
BANK: B→C, A→B, N→O, K→L

Question 56

Pattern Coding

Problem

If "PENCIL" is coded as "RGPENK", how is "PAPER" coded?

Solution

Pattern: Each letter shifted by +2

P→R, E→G, N→P, C→E, I→K, L→N
PAPER: P→R, A→C, P→R, E→G, R→T

Question 57

Family Relations

Problem

Pointing to a man, a woman said, "His mother is the only daughter of my mother." How is the woman related to the man?

Solution

"Only daughter of my mother" = the woman herself
"His mother is the woman" = the woman is the man's mother

Question 58

Sibling Relations

Problem

A is the son of B. C is the daughter of B. D is the brother of A. How is D related to C?

Solution

A and C are siblings (both children of B)
D is brother of A
Therefore, D is also brother of C

Question 59

Seating Arrangement

Problem

Five friends A, B, C, D, E are sitting in a row. A is not at either end. B is to the right of A. C is between A and D. Who is sitting at the rightmost position?

Solution

Let positions be: 1, 2, 3, 4, 5 (left to right)

A is not at end, so A is at 2, 3, or 4
B is to right of A
C is between A and D
Arrangement: E, A, C, D, B

Question 60

Direction Sense

Problem

A person walks 5 km North, then 3 km East, then 2 km South. How far is he from starting point?

Solution

Net North = 5 - 2 = 3 km
Net East = 3 km
Distance = √(3² + 3²) = √18 = 3√2 km

Question 61

Number Series

Problem

Find the next number: 1, 4, 9, 16, 25, ?

Solution

Pattern: n² where n = 1, 2, 3, 4, 5...

1²=1, 2²=4, 3²=9, 4²=16, 5²=25
Next: 6² = 36

Question 62

Coding Pattern

Problem

If "APPLE" is coded as "BQQMF", how is "ORANGE" coded?

Solution

Pattern: Each letter shifted by +1

A→B, P→Q, P→Q, L→M, E→F
ORANGE: O→P, R→S, A→B, N→O, G→H, E→F

Question 63

Blood Relations

Problem

Pointing to a photograph, a man said, "She is the daughter of my father's only son." How is the woman related to the man?

Solution

"My father's only son" = the man himself
"She is the daughter of the man" = the woman is the man's daughter

Question 64

Series Pattern

Problem

Find the missing number: 2, 5, 10, 17, 26, ?

Solution

Pattern: n² + 1 where n = 1, 2, 3, 4, 5...

1²+1=2, 2²+1=5, 3²+1=10, 4²+1=17, 5²+1=26
Next: 6²+1 = 37

Question 65

Logical Deduction

Problem

Statements: All birds can fly. Penguins are birds. Conclusion: Penguins can fly. Is the conclusion valid?

Solution

The first statement is false (not all birds can fly).
Penguins are birds but cannot fly.
Conclusion is invalid.

Question 66

Direction Problem

Problem

A person walks 6 km East, then 8 km North. How far is he from the starting point?

Solution

Distance = √(6² + 8²) = √(36 + 64) = √100 = 10 km

Question 67

Series

Problem

Find the next number: 1, 3, 6, 10, 15, ?

Solution

Pattern: n(n+1)/2 where n = 1, 2, 3, 4, 5...

1×2/2=1, 2×3/2=3, 3×4/2=6, 4×5/2=10, 5×6/2=15
Next: 6×7/2 = 21

Question 68

Coding

Problem

If "CAT" is coded as "3120", how is "DOG" coded? (A=1, B=2, C=3…)

Solution

C=3, A=1, T=20 → 3120
D=4, O=15, G=7 → 4157

Question 69

Series

Problem

Find the missing number: 8, 12, 18, 26, 36, ?

Solution

Pattern: Differences are 4, 6, 8, 10...

Next difference = 12
Missing number = 36 + 12 = 48

Question 70

Logical Reasoning

Problem

If all roses are flowers and some flowers are red, which statement is definitely true?

Options:

A) All roses are red
B) Some roses are red
C) Some red things are flowers
D) All flowers are roses

Answer: C) Some red things are flowers

Question 71

Series

Problem

Find the next number: 64, 32, 16, 8, 4, ?

Solution

Pattern: Each number is half of previous

64/2=32, 32/2=16, 16/2=8, 8/2=4
Next: 4/2 = 2

Question 72

Coding

Problem

If "MAN" is coded as "13114", how is "WOMAN" coded? (A=1, B=2…)

Solution

M=13, A=1, N=14 → 13114
W=23, O=15, M=13, A=1, N=14 → 231513114

Question 73

Blood Relations

Problem

A is the father of B. B is the brother of C. How is A related to C?

Solution

A is father of B
B is brother of C
Therefore, A is also father of C

Question 74

Series Pattern

Problem

Find the next number: 1, 8, 27, 64, 125, ?

Solution

Pattern: n³ where n = 1, 2, 3, 4, 5...

1³=1, 2³=8, 3³=27, 4³=64, 5³=125
Next: 6³ = 216

Question 75

Logical Reasoning

Problem

Statements: Some cats are dogs. All dogs are animals. Conclusion: Some cats are animals. Is the conclusion valid?

Solution

Some cats are dogs, and all dogs are animals.
Therefore, some cats are animals.
Conclusion is valid.

Question 76

Reading Comprehension

Problem

Questions:

Question 77

Error Spotting

Problem

Identify the error in: "Neither of the students were present in the class."

Solution

Error: Subject-verb agreement

"Neither" is singular, so verb should be "was"
Correct: "Neither of the students was present in the class."

Question 78

Sentence Correction

Problem

Correct: "The data is incorrect."

Solution

"Data" is plural, so verb should be "are"
Correct: "The data are incorrect."

Question 79

Synonyms

Problem

Find synonym of "Abundant"

Options: A) Scarce B) Plentiful C) Rare D) Limited

Answer: B) Plentiful

Question 80

Antonyms

Problem

Find antonym of "Benevolent"

Options: A) Kind B) Generous C) Malevolent D) Charitable

Answer: C) Malevolent

Question 81

Sentence Rearrangement

Problem

Arrange in logical order:

However, it requires careful planning
Starting a business can be rewarding
Market research is essential
Success depends on multiple factors

Solution

Logical order: 2, 1, 3, 4

Starting a business can be rewarding
However, it requires careful planning
Market research is essential
Success depends on multiple factors

Question 82

Fill in the Blanks

Problem

The company's profits have been _____ steadily over the past year.

Options: A) declining B) decliningly C) decline D) declined

Answer: A) declining

Question 83

Sentence Completion

Problem

The manager was _____ with the team's performance and decided to reward them.

Options: A) pleased B) pleasing C) please D) pleases

Answer: A) pleased

Question 84

Antonyms

Problem

Find antonym of "Temporary"

Options: A) Brief B) Permanent C) Short D) Momentary

Answer: B) Permanent

Question 85

Synonyms

Problem

Find synonym of "Enormous"

Options: A) Tiny B) Huge C) Small D) Little

Answer: B) Huge

Question 86

Grammar - Prepositions

Problem

Choose the correct preposition: The meeting will be held _____ 3 PM.

Options: A) at B) on C) in D) by

Answer: A) at

Question 87

Vocabulary - Context

Problem

The new policy will _____ significant changes in the organization.

Options: A) effect B) affect C) impact D) influence

Answer: B) affect

Question 88

Grammar

Problem

Choose the correct form: "Neither the teacher nor the students _____ present."

Options: A) was B) were C) is D) are

Answer: B) were

Question 89

Grammar

Problem

Choose the correct form: "The number of students _____ increased."

Options: A) have B) has C) are D) were

Answer: B) has

Question 90

Error Spotting

Problem

Identify the error: "Each of the students have submitted their assignments."

Solution

Error: Subject-verb agreement

"Each" is singular, so verb should be "has"
Correct: "Each of the students has submitted his/her assignment."

Question 91

Error Spotting

Problem

Identify the error: "The team of players are ready."

Solution

Error: "Team" is a collective noun, should use singular verb
Correct: "The team of players is ready."

Question 92

Error Spotting

Problem

Identify the error: "The data shows that the results are positive."

Solution

"Data" is plural, so verb should be "show"
Correct: "The data show that the results are positive."

Question 93

Vocabulary

Problem

Find synonym of "Courageous"

Options: A) Fearful B) Brave C) Timid D) Cowardly

Answer: B) Brave

Question 94

Vocabulary

Problem

Find antonym of "Generous"

Options: A) Kind B) Stingy C) Giving D) Charitable

Answer: B) Stingy

Question 95

Percentage

Problem

If 20% of a number is 40, what is the number?

Solution

20% of number = 40
Number = (40/20) × 100 = 200

Question 96

Ratio

Problem

If A:B = 3:4 and B:C = 5:6, find A:B:C.

Solution

A:B = 3:4 = 15:20
B:C = 5:6 = 20:24
A:B:C = 15:20:24

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Infosys aptitude

Practice Questions

Profit Percentage

Problem

Solution

Consumption Reduction

Problem

Solution

Overall Profit/Loss

Problem

Solution

Successive Discounts

Problem

Solution

Combined Work

Problem

Solution

Men Leaving

Problem

Solution

Efficiency

Problem

Solution

Train & Platform

Problem

Solution

Relative Speed

Problem

Solution

Milk & Water

Problem

Solution

Doubling Time

Problem

Solution

Compound Interest

Problem

Solution

Average Age

Problem

Solution

Ratio Problems

Problem

Solution

LCM and HCF

Problem

Solution

Divisibility

Problem

Solution

Remainder Theorem

Problem

Solution

Age Problems

Problem

Solution

Permutations

Problem

Solution

Combinations

Problem

Solution

Square Pattern

Problem

Solution

Pattern Series

Problem

Solution

Cube Pattern

Problem

Solution

Letter Shifting

Problem

Solution

Simple Coding