Aptitude and Reasoning Questions

Q:

If repetition of the digits is allowed, then the number of even natural numbers having three digits is :

A) 550 B) 450
C) 500 D) 540
 
Answer & Explanation Answer: B) 450

Explanation:

In a 3 digit number one’s place can be filled in 5 different ways with (0,2,4,6,8)

10’s place can be filled in 10 different ways

100’s place can be filled in 9 different ways

There fore total number of ways = 5X10X9 = 450

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10 15377
Q:

A box contains 5 detective and 15 non-detective bulbs. Two bulbs are chosen at random. Find the probability that both the bulbs are non-defective.

A) 5/19 B) 3/20
C) 21/38 D) None of these
 
Answer & Explanation Answer: C) 21/38

Explanation:

n(S) = C220 = 190 

n(E) = C215 = 105 

Therefore, P(E) = 105/190 = 21/38

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Filed Under: Probability

12 15361
Q:

In the following question, select the missing number from the given series.

 

8, 16, ?, 64, 128

 

A) 30 B) 32
C) 28 D) 48
 
Answer & Explanation Answer: B) 32

Explanation:
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Filed Under: Number Series
Exam Prep: Bank Exams

4 15356
Q:

How many triangles are present in the below figure?

 

A) 16 B) 18
C) 17 D) 19
 
Answer & Explanation Answer: C) 17

Explanation:
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Filed Under: Image Analysis
Exam Prep: Bank Exams

0 15353
Q:

An Assertion (A) and a Reason (R) are given below.

 

Assertion (A) : Earthworms are not good for agriculture.

Reason (R) : Earthworms break down the soil into fine particles and make it soft.

 

Choose the correct option.

 

A) A is true but R is false B) A is false but R is true
C) Both A and R are true and R is the correct explanation of A D) Both A and R are false
 
Answer & Explanation Answer: B) A is false but R is true

Explanation:
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Filed Under: Statement and Conclusions
Exam Prep: Bank Exams

0 15353
Q:

Two trains of equal length , running in opposite directions , pass a pole in 18 and 12 seconds. The trains will cross each other in 

A) 14.4 sec B) 15.5 sec
C) 18.8 sec D) 20.2 sec
 
Answer & Explanation Answer: A) 14.4 sec

Explanation:

Let the length of the train be L metres

 

Speed of first train = 360018xL m/hour

 

Speed of secxond train = 360012xL m/hour

 

When running in opposite directions, relative speed = 200 L + 300 L m/hour

 

Distance to be covered = L + L = 2L metre

 

Time taken = 2L500Lx3600 sec

 

                 =14.4 sec

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Filed Under: Problems on Trains
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

25 15351
Q:

Arrange the given words in the sequence in which they occur in the dictionary.

i. Recognize
ii. Receptive
iii. Record
iv. Recur

A) ii, i, iii, iv B) iv, iii, ii, i
C) ii, i, iv, iii D) i, ii, iii, iv
 
Answer & Explanation Answer: A) ii, i, iii, iv

Explanation:
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Filed Under: Logical Sequence of Words
Exam Prep: Bank Exams

1 15338
Q:

Select the option that represents the number of squares in the given figure.

 

 

A) 2 B) 1
C) 4 D) 3
 
Answer & Explanation Answer: A) 2

Explanation:
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Filed Under: Image Analysis
Exam Prep: Bank Exams

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