Aptitude and Reasoning Questions

Q:

A towel, when bleached, was found to have lost 20% of its length and 10% of its breadth.  The percentage of decrease in area is:

A) 18% B) 28%
C) 38% D) 48%
 
Answer & Explanation Answer: B) 28%

Explanation:

Let original length = x and original breadth = y.  

Decrease in area = xy - 80100x×90100y = (7/25)xy

 

Decrease % =    (7/25)xy * (1/xy) * 100 = 28%

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Filed Under: Area
Exam Prep: Bank Exams
Job Role: Bank PO

3 18884
Q:

Find the appropriate relation for quantity 1 and quantity 2 in the following question:

Quantity I: the unit digit in (6817)754

Quantity II: the unit digit in (365×659×771)

A) Quantity I > Quantity II B) Quantity I < Quantity II
C) Quantity I ≥ Quantity II D) Quantity I ≤ Quantity II
 
Answer & Explanation Answer: A) Quantity I > Quantity II

Explanation:
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1 18883
Q:

What is the measure of an interior angle of a regular polygon of 8 sides?

 

A) 140 B) 144
C) 135 D) 150
 
Answer & Explanation Answer: C) 135

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

1 18880
Q:

Amar can do a piece of work in 10 days. He works at it for 4 days and then Arun finishes it in 9 days. In how many days can Amar and Arun together finish the work ?

A) 4 days B) 8 days
C) 3 days D) 6 days
 
Answer & Explanation Answer: D) 6 days

Explanation:

4/10 + 9/x = 1     => x = 15 

 

Then both can do in 

1/10 + 1/15 = 1/6     => 6 days

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Filed Under: Time and Work
Exam Prep: GRE , GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

19 18857
Q:

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

 

15, 22, 31, 42, 55, ?

 

A) 60   B) 68  
C) 70   D) 74
 
Answer & Explanation Answer: C) 70  

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

10 18840
Q:

What will come in place of the question mark (?) in the given question?

452 + 312 ÷ 13 = 34 * ?

A) 18 B) 32
C) 26 D) 28
 
Answer & Explanation Answer:

Explanation:

452 + 312 ÷ 13 = 34 * ?

=> 452 + 312/13 = 34 * x

=> 452 + 24 = 34 * x

=> x = 476/34 = 14

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Filed Under: Number Series

0 18832
Q:

25 : 37 :: 49 : ?

A) 65 B) 69
C) 79 D) 81
 
Answer & Explanation Answer: A) 65

Explanation:

Here the given numbers are related in such a manner that,

52 = 255+12 + 1 = 37Similarly, 72 = 497+12 + 1 = 64 + 1 = 65

 

Hence, 25 : 37 :: 49 : 65.

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

51 18828
Q:

Three houses are available in a locality. Three persons apply for the houses. Each applies for one house without consulting others. The probability that all the three apply for the same house is :

A) 2/9 B) 1/9
C) 8/9 D) 7/9
 
Answer & Explanation Answer: B) 1/9

Explanation:

One person can select one house out of 3= 3C1 ways =3.

 

Hence, three persons can select one house out of 3 in 3 x 3 x 3 =9.

 

Therefore, probability that all thre apply for the same house is 1/9

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Filed Under: Probability

50 18797