Deductive and Inductive Reasoning - Logic - General Aptitude (GA) Previous Year Questions

1

2016 · General Aptitude (GA) · Logic · Deductive and Inductive Reasoning

Chemistry (CY) 2016

The overwhelming number of people infected with rabies in India has been flagged by the World Health Organization as a source of concern. It is estimated that inoculating 70% of pets and stray dogs against rabies can lead to a significant reduction in the number of people infected with rabies.
Which of the following can be logically inferred from the above sentences?

A

The number of people in India infected with rabies is high.

B

The number of people in other parts of the world who are infected with rabies is low.

C

Rabies can be eradicated in India by vaccinating 70% of stray dogs.

D

Stray dogs are the main source of rabies worldwide.

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2

2019 · General Aptitude (GA) · Logic · Deductive and Inductive Reasoning

Chemistry (CY) 2019

Under a certain legal system, prisoners are allowed to make one statement. If their statement turns out to be true then they are hanged. If the statement turns out to be false then they are shot. One prisoner made a statement and the judge had no option but to set him free. Which one of the following could be that statement?

A

I did not commit the crime

B

I committed the crime

C

I will be shot

D

You committed the crime

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3

2019 · General Aptitude (GA) · Logic · Deductive and Inductive Reasoning

Chemistry (CY) 2019

M and N had four children P, Q, R and S. Of them, only P and R were married. They had children X and Y respectively. If Y is a legitimate child of W, which one of the following statements is necessarily FALSE?

A

M is the grandmother of Y

B

R is the father of Y

C

W is the wife of R

D

W is the wife of P

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4

2023 · General Aptitude (GA) · Logic · Deductive and Inductive Reasoning

Chemistry (CY) 2023

Forestland is a planet inhabited by different kinds of creatures. Among other creatures, it is populated by animals all of whom are ferocious. There are also creatures that have claws, and some that do not. All creatures that have claws are ferocious. Based only on the information provided above, which one of the following options can be logically inferred with certainty?

A

All creatures with claws are animals.

B

Some creatures with claws are non-ferocious.

C

Some non-ferocious creatures have claws.

D

Some ferocious creatures are creatures with claws.

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5

2017 · General Aptitude (GA) · Logic · Deductive and Inductive Reasoning

Chemistry (CY) 2017

S, T, U, V, W, X, Y, and Z are seated around a circular table. T’s neighbours are Y and V. Z is seated third to the left of T and second to the right of S. U’s neighbours are S and Y; and T and W are not seated opposite each other. Who is third to the left of V?

A

X

B

W

C

U

D

T

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6

2021 · General Aptitude (GA) · Logic · Deductive and Inductive Reasoning

Chemistry (CY) 2021

Statement: Either P marries Q or X marries Y. Among the options below, the logical NEGATION of the above statement is:

A

P does not marry Q and X marries Y.

B

Neither P marries Q nor X marries Y.

C

X does not marry Y and P marries Q.

D

P marries Q and X marries Y.

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7

2022 · General Aptitude (GA) · Logic · Deductive and Inductive Reasoning

Chemistry (CY) 2022

Six persons P, Q, R, S, T and U are sitting around a circular table facing the center not necessarily in the same order. Consider the following statements:

• P sits next to S and T.
• Q sits diametrically opposite to P.
• The shortest distance between S and R is equal to the shortest distance between T and U.

Based on the above statements, Q is a neighbor of

A

U and S

B

R and T

C

R and U

D

P and S

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8

2022 · General Aptitude (GA) · Logic · Deductive and Inductive Reasoning

Chemistry (CY) 2022

Given below are three statements and four conclusions drawn based on the statements.
Statement 1: Some engineers are writers.
Statement 2: No writer is an actor.
Statement 3: All actors are engineers.
Conclusion I: Some writers are engineers.
Conclusion II: All engineers are actors.
Conclusion III: No actor is a writer.
Conclusion IV: Some actors are writers.
Which one of the following options can be logically inferred?

A

Only conclusion I is correct

B

Only conclusion II and conclusion III are correct

C

Only conclusion I and conclusion III are correct

D

Either conclusion III or conclusion IV is correct

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9

2026 · General Aptitude (GA) · Logic · Deductive and Inductive Reasoning

Chemistry (CY) 2026

Four hills H1, H2, H3, and H4 are present in an area. The following observations are made about them:
i. Neither H2 nor H3 is the easternmost hill.
ii. Neither H2 nor H3 is the westernmost hill.
iii. Neither the easternmost hill nor the westernmost hill is the southernmost hill.
iv. Two hills are located to the west of H2.
v. The southernmost hill has at least two hills to its east.

The southernmost hill is ________.

A

H1

B

H2

C

H3

D

H4

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