Aptitude and Reasoning Questions

Q:

Select the odd figure out of the given series.

 

 

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

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Image Analysis
Exam Prep: Bank Exams

0 16549
Q:

A box contains 100 balls, numbered from 1 to 100. If three balls are selected at random and with replacement from the box, what is the probability that the sum of the three numbers on the balls selected from the box will be odd?

A) 1/6 B) 1/3
C) 1/2 D) 1/4
 
Answer & Explanation Answer: C) 1/2

Explanation:

P(odd) = P (even) =12 1(because there are 50 odd and 50 even numbers)

 

Sum or the three numbers can be odd only under the following 4 scenarios:

 

Odd + Odd + Odd = 12*12*1218

 

Odd + Even + Even = 12*12*12=18

 

Even + Odd + Even = 12*12*12=18

 

Even + Even + Odd = 12*12*12 = 18

 

Other combinations of odd and even will give even numbers. 

 

Adding up the 4 scenarios above:

 

1818+1818 = 48 = 12

Report Error

View Answer Report Error Discuss

Filed Under: Probability

10 16543
Q:

The third proportional tox2-y2 and x-y is :

A) (x + y ) B) (x - y)
C) (x + y) / ( x - y) D) (x -y) / ( x + y)
 
Answer & Explanation Answer: D) (x -y) / ( x + y)

Explanation:

Let the third proportional to x2-y2 and x-y be z. Then, 

 

x2-y2:x-y::x-y:z  

 

=>x2-y2*z=x-y2  

 

=> z=x-y2x2-y2=x-yx+y

Report Error

View Answer Report Error Discuss

Filed Under: Ratios and Proportions

65 16537
Q:

The average age of a group of persons going for picnic is 16 years. Twenty new persons with an average age of 15 years join the group on the spot due to which their average age becomes 15.5 years. The number of persons initially going for picnic is :

A) 15 B) 20
C) 23 D) 24
 
Answer & Explanation Answer: B) 20

Explanation:

Let the initial number of persons be x. Then,

16x + 20 * 15 = 15.5 (x + 20) <=> 0.5x = 10 <=> x = 20.

Report Error

View Answer Report Error Discuss

Filed Under: Average

19 16534
Q:

Rohit, 'Kajal, Tanmay and Suman are four friends. Who is the oldest among them ? 

I. The total age of Kajol and Tanmay together is more than that of Suman. 

II. The total age of Rohit and Kajol together is less than that of Suntan. 

A) If the data in statement I alone are sufficient to answer the question B) If the data in statement II alone are sufficient answer the question
C) If the data either in I or II alone are sufficient to answer the question; D) If the data even in both the statements together are not sufficient to answer the question
 
Answer & Explanation Answer: D) If the data even in both the statements together are not sufficient to answer the question

Explanation:

From given statements, we find that K + T > S and R - K <S.

Thus. who is oldest is not known  

 

 

Report Error

View Answer Report Error Discuss

Filed Under: Data Sufficiency

11 16515
Q:

Find the least number by which 175760 be divided to make it a perfect cube.

A) 6 B) 10
C) 9 D) 30
 
Answer & Explanation Answer: B) 10

Explanation:

175760 =2³ x 2 x 5 x 13³
= 2³ x 2 x 5 x 13³

To make perfect cube, it must be divided by 2 x 5 = 10

Report Error

View Answer Report Error Discuss

Filed Under: Arithmetical Reasoning
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

20 16506
Q:

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

i. Dominant
ii. Dormant
iii. Docile
iv. Document

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

Explanation:
Report Error

View Answer Report Error Discuss

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

0 16505
Q:

Pride is to lion as shoal is to

A) Fish B) School
C) Deer D) Plants
 
Answer & Explanation Answer: A) Fish

Explanation:

Given Pride is to lion as shoal is to ?.

Pride means a group of lions. Similarly, Shoal means a group of fish swimming. Here the other options have no relation with the given word in that manner.

 

Hence, Pride is to Lion as Shoal is to Fish.

Report Error

View Answer Report Error Discuss

Filed Under: Analogy
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

9 16493