Aptitude and Reasoning Questions

Q:

The product of two numbers is 2028 and their H.C.F. is 13. The number of such pairs is:

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

Explanation:

Let the numbers 13a and 13b.

Then, 13a x 13b = 2028

=>ab = 12.

Now, the co-primes with product 12 are (1, 12) and (3, 4).

[Note: Two integers a and b are said to be coprime or relatively prime if they have no common positive factor other than 1 or, equivalently, if their greatest common divisor is 1 ]

So, the required numbers are (13 x 1, 13 x 12) and (13 x 3, 13 x 4).

Clearly, there are 2 such pairs.

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Filed Under: HCF and LCM

231 69036
Q:

Find the next number in the number series?

6, 6, 9, 18, 45, ?

A) 87 B) 99.75
C) 115.5 D) 135
 
Answer & Explanation Answer: D) 135

Explanation:

The given number series is 6, 6, 9, 18, 45, ?

Here the series follows a pattern that,

6 x 1 = 6

6 x 1.5 = 9

9 x 2 = 18

18 x 2.5 = 45

45 x 3 = 135

 

Hence, the next number in the given number series is 135.

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Filed Under: Odd Man Out
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , IT Trainer

8 68983
Q:

Read the following question and decide which of the given statements is/are sufficient.

.
In a class of 50 students, how many girls scored above 80% in Maths?


Statements:


1. Exactly four boys scored above 80% in Maths.


2. One-third of the class scored above 80% in Maths

 

A) Either 1 or 2 is sufficient to answer the question. B) Both 1 or 2 together are sufficient to answer the question.
C) 1 alone is sufficient while 2 alone is not sufficient to answer the question. D) .2 alone is sufficient while 1 alone is not sufficient to answer the question.
 
Answer & Explanation Answer: A) Either 1 or 2 is sufficient to answer the question.

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

6 68733
Q:

If Z = 52 and ACT = 48, then BAT will be equal to

A) 39 B) 41
C) 44 D) 46
 
Answer & Explanation Answer: D) 46

Explanation:

In the given code, A = 2, B = 4, C = 6,.... , Z = 52.

So, ACT = 2 + 6 + 40 = 48 and

BAT = 4 + 2 + 40 = 46

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Filed Under: Coding and Decoding

938 68624
Q:

Simplify

39.96% of 649.85 ÷13.07 = 45.14 - ?

A) 25 B) 26
C) 27 D) 28
 
Answer & Explanation Answer: A) 25

Explanation:

This can be easily simplified by Approximation process

Given 39.96% of 649.85 ÷13.07 = 45.14 - ? can be written as 

40% of 650 ÷13 = 45 - ?

 

40 x 65010013 = 45 - ?? = 45 - 20? = 25.

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4 68541
Q:

If A means '+', @ means 'x', & means '/' and V means '-', then the value of

 

7 @ 2 V 135 & 5 @ 3 & 9 A 1

A) 14 B) 9
C) 6 D) 1
 
Answer & Explanation Answer: C) 6

Explanation:
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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

2 68425
Q:

Fill in the blanks

sinA = _____ x cosA

 

A) sinA B) tanA
C) cotA D) cosA
 
Answer & Explanation Answer: B) tanA

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

1 68394
Q:

A man's speed with the current is 15 km/hr and the speed of the current is 2.5 km/hr. The man's speed against the current is :

A) 9.5 km/hr B) 10 km/hr
C) 10.5 km/hr D) 11 km/hr
 
Answer & Explanation Answer: B) 10 km/hr

Explanation:

Man's rate in still water = (15 - 2.5) km/hr = 12.5 km/hr.

Therefore,  Man's rate against the current = (12.5 - 2.5) = 10 km/hr.

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Filed Under: Problems on Trains
Exam Prep: CAT
Job Role: Bank PO

109 68273