In a series: 100, 99, 97, 94, 90, ? What is the next number?

The correct answer is A: 85. Differences: -1, -2, -3, -4, -5. Next difference is -5, so 90 - 5 = 85

If MATHEMATICS is coded as MHEATAMTICS, how many letters remain in their original positions?

The correct answer is C: 4. M(1)-M, A(2)-H, T(3)-E, H(4)-A, E(5)-T, M(6)-A, A(7)-T, T(8)-I, I(9)-C, C(10)-S. Letters at positions 1,6,8,9 remain same after analysis. Count=4.

Syllogism: All triangles are polygons. Some polygons are rectangles. Therefore:

The correct answer is D: No definite conclusion. The middle term 'polygons' is not distributed in either premise, so no valid conclusion can be drawn.

Some clouds are white. All white things are visible. Which of the following must be true?

The correct answer is C: Some clouds are visible. From 'Some clouds are white' and 'All white things are visible', we can conclude 'Some clouds are visible'

All students are learners. Some learners are successful. All successful people are happy. Which is definitely true?

The correct answer is C: Some learners are happy. Some learners are successful, and all successful people are happy, therefore some learners are definitely happy.

Corporate & IT Interview Preparation

Reasoning Ability — Series & Analogies

Aptitude · Reasoning · English · CS — Corporate & Campus Interview Prep

21 Questions 10 Topics Take Test

Showing 1–10 of 21 questions in Series & Analogies

Q.1 Easy Series & Analogies

In a series: 2, 6, 12, 20, 30, ?, what is the next number?

A 42

B 40

C 44

D 48

Correct Answer: A. 42

Explanation:

The pattern is n(n+1): 1×2=2, 2×3=6, 3×4=12, 4×5=20, 5×6=30, 6×7=42

Take Test

Q.2 Easy Series & Analogies

If MOTHER is coded as 134589, then FATHER is coded as?

A 614589

B 614589

C 614589

D 614589

Correct Answer: A. 614589

Explanation:

M=1, O=3, T=4, H=5, E=8, R=9. F=6, A=1, T=4, H=5, E=8, R=9 gives 614589

Take Test

Q.3 Easy Series & Analogies

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

A Aunt

B Mother

C Sister

D Cousin

Correct Answer: A. Aunt

Explanation:

A is sister of B, B is brother of C, C is father of D. So A is aunt of D.

Take Test

Q.4 Easy Series & Analogies

In a row of 10 students, Rajesh is 5th from left. What is his position from right?

A 6th

B 5th

C 4th

D 7th

Correct Answer: A. 6th

Explanation:

Position from right = Total + 1 - Position from left = 10 + 1 - 5 = 6th

Take Test

Q.5 Easy Series & Analogies

Ravi goes 5 km north, then 3 km east, then 5 km south. How far is he from starting point?

A 3 km

B 5 km

C 8 km

D 13 km

Correct Answer: A. 3 km

Explanation:

North 5 km and South 5 km cancel out. Only 3 km east remains.

Take Test

Q.6 Easy Series & Analogies

All birds are animals. All animals are living beings. Therefore, all birds are living beings. This is an example of?

A Valid Syllogism

B Invalid Syllogism

C Fallacy

D Paradox

Correct Answer: A. Valid Syllogism

Explanation:

This follows the valid syllogistic form: All A are B, All B are C, Therefore All A are C.

Take Test

Q.7 Easy Series & Analogies

In a series: 3, 9, 27, 81, ?, what is the next term?

A 243

B 162

C 324

D 256

Correct Answer: A. 243

Explanation:

Each term is multiplied by 3: 3×3=9, 9×3=27, 27×3=81, 81×3=243

Take Test

Q.8 Easy Series & Analogies

Book is to Author as Film is to?

A Director

B Actor

C Producer

D Camera

Correct Answer: A. Director

Explanation:

Author creates a Book similarly Director creates a Film.

Take Test

Q.9 Easy Series & Analogies

In a series: 3, 6, 12, 24, 48, ?, what is the next number?

A 96

B 84

C 72

D 60

Correct Answer: A. 96

Explanation:

Each number is multiplied by 2. 48 × 2 = 96

Take Test

Q.10 Easy Series & Analogies

Analogy: Mountain is to Valley as Peak is to?

A Summit

B Depression

C Height

D Altitude

Correct Answer: B. Depression

Explanation:

Mountain and Valley are opposites. Peak and Depression are opposites.

Take Test

1 2 3

All Subjects & Topics