Aptitude and Reasoning Questions

Q:

The perimeter of a square is 26 cm. Find its area (in cm2).

 

A) 42.25   B) 84.5  
C) 39.25   D) 78.5
 
Answer & Explanation Answer: A) 42.25  

Explanation:
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Filed Under: Area
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Q:

How many 4-letter words with or without meaning, can be formed out of the letters of the word, 'LOGARITHMS', if repetition of letters is not allowed?

A) 4050 B) 3600
C) 1200 D) 5040
 
Answer & Explanation Answer: D) 5040

Explanation:

'LOGARITHMS' contains 10 different letters.

 

Required number of words = Number of arrangements of 10 letters, taking 4 at a time.

 

10P4

 

= 5040.

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43 43574
Q:

After replacing an old member by a new member, it was found that the average age of five members of a club is the same as it was 3 years ago. What is the difference between the ages of the replaced and the new member ?

A) 12 B) 13
C) 14 D) 15
 
Answer & Explanation Answer: D) 15

Explanation:

i) Let the ages of the five members at present be a, b, c, d & e years. 

And the age of the new member be f years. 

ii) So the new average of five members' age = (a + b + c + d + f)/5 ------- (1) 

iii) Their corresponding ages 3 years ago = (a-3), (b-3), (c-3), (d-3) & (e-3) years 

So their average age 3 years ago = (a + b + c + d + e - 15)/5 = x ----- (2) 

==> a + b + c + d + e = 5x + 15 

==> a + b + c + d = 5x + 15 - e ------ (3) 

iv) Substituting this value of a + b + c + d = 5x + 15 - e in (1) above, 

The new average is: (5x + 15 - e + f)/5 

Equating this to the average age of x years, 3 yrs, ago as in (2) above, 

(5x + 15 - e + f)/5 = x 

==> (5x + 15 - e + f) = 5x 

Solving e - f = 15 years. 

Thus the difference of ages between replaced and new member = 15 years.

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Filed Under: Average

165 43549
Q:

Select the related word/letters/numbers from the given alternatives:

42:20::64:?

A) 31 B) 32
C) 33 D) 34
 
Answer & Explanation Answer: A) 31

Explanation:
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Filed Under: Analogy
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Q:

In the following question, select the related letter pair from the given alternatives.

FOM : CLJ : : ?  :  ?

A) RQS : POQ B) RAX : OXU
C) JKN : MNQ D) ACD : CEF
 
Answer & Explanation Answer: B) RAX : OXU

Explanation:
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Filed Under: Analogy
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0 43509
Q:

Find the odd man out in the following number series?

5, 4, 9, 32, 273

A) 4 B) 9
C) 32 D) 273
 
Answer & Explanation Answer: C) 32

Explanation:

The given number series follows 5, 4, 9, 32, 308 pattern that

 

5

5 x 1 - 1 = 4

4 x 3 - 3 = 9

9 x 5 - 5 = 40 (not equals to 32)

40 x 7 - 7 = 273

 

Hence, the odd man in the given number series is 32.

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Filed Under: Odd Man Out
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4 43458
Q:

X boys can do a piece of work in 24 days. In how much time (in days), 2X boys will do half of the work?

 

A) 6 B) 12
C) 18 D) 8
 
Answer & Explanation Answer: A) 6

Explanation:
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Filed Under: Time and Work
Exam Prep: Bank Exams

0 43432
Q:

Which of the following terms follows the trend of the given list?

 

YXXXXXX, YYXXXXX, YYYXXXX, YYYYXXX, YYYYYXX, _______________.

 

A) XXXXXXX B) YXXXXXX
C) YYYYYYX D) YYXXXXX
 
Answer & Explanation Answer: C) YYYYYYX

Explanation:
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Filed Under: Alphabet Test
Exam Prep: Bank Exams

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