Aptitude and Reasoning Questions

Q:

Find the odd man out?

28, 12, 4, 2, -2

A) -2 B) 2
C) 12 D) 28
 
Answer & Explanation Answer: B) 2

Explanation:

Here the given series 28, 12, 4, 2, -2 follows a pattern that

 

28 28 - 24 = 28 - 16 = 1212 - 23 = 12 - 8 = 44 - 22 = 4 - 4 = 0 (NOT 2)0 - 21 = 0 - 2 = -2

 

Hence, the odd man in the given series is 2.

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Filed Under: Odd Man Out
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4 75080
Q:

 (3x + 2) (2x - 5) = ax² + kx + n .

What is the value of a - n + k ?

A) 5 B) 8
C) 9 D) 10
 
Answer & Explanation Answer: A) 5

Explanation:

This is a quadratic equation. To find n we multiply the last terms in each bracket together (2 times -5) = -10

To find ‘a’ we multiply the first terms in each bracket together (3x times 2x) = 6x2, So a = 6.

Thus a - n = 16

To find k we multiply the first term in the first bracket by the second term in the second bracket and add the result to the product of the second term in the first bracket and the first term in the second. (-15x + 4x) = -11x. So k = -11

16 - 11 = 5

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Filed Under: Problems on Numbers
Exam Prep: GRE

7 75022
Q:

If A=C , B= D , C = E and so on, code the following:-

‘STUDENT’

A) VWVFGPV B) UUWFGPV
C) UVWFGPV D) UVVFGPV
 
Answer & Explanation Answer: C) UVWFGPV

Explanation:

According to question: S=U, T=V, U=W, D=F, E=G, N=P, T=V

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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

4 74929
Q:

What is the simplified form of 64288 ?

 

A) 23 B) 1/2
C) 23 D) 33
 
Answer & Explanation Answer: A) 23

Explanation:
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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

0 74620
Q:

Odd man out of the series

90 72 56 42 36 20

A) 20 B) 36
C) 42 D) 56
 
Answer & Explanation Answer: B) 36

Explanation:

The given number series is 90 72 56 42 36 20

9 x 10 = 90

8 x 9 = 72

7 x 8 = 56

6 x 7 = 42

5 x 6 = 30 (not 36) 

4 x 5 = 20

 

Hence, the odd man in the given number series is 36.

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Filed Under: Odd Man Out
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8 74619
Q:

∆ABC is right angled at B. If cosA = 8/17, then what is the value of cotC ?

 

A)  15/8 B) 15/17
C)  8/17 D) 17/15
 
Answer & Explanation Answer: A)  15/8

Explanation:
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Filed Under: Area
Exam Prep: Bank Exams

3 74505
Q:

Complete the number series given below ?

13        19       37      ?         141        243

A) 58 B) 67
C) 75 D) 96
 
Answer & Explanation Answer: C) 75

Explanation:

The given series follows the pattern that

exp.

So the missing number is  37 + 38 = 75

75 + 66 = 141

....

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Filed Under: Number Series
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61 74367
Q:

If NOTEBOOK is coded as REGOLEEN, and SHIRT as XYZBG, then TORN is coded as

 

A) GZBR B) GEBN
C) GEBR D) GOBR
 
Answer & Explanation Answer: C) GEBR

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

23 74298