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
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3 18984
Q:

96% of the population of a village is 23040. The total population of the village is ?

A) 24000 B) 32256
C) 25478 D) 26587
 
Answer & Explanation Answer: A) 24000

Explanation:

Let the total population be 'P'

P x (96/100) = 23040

P = 240 * 100

P = 24000.

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Filed Under: Percentage
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18 18982
Q:

Which of the following statement(s) is/are TRUE?

I. 2√3 > 3√2
II. 4√2 > 2√8

A) Only I B) Only II
C) Neither I nor II D) Both I and II
 
Answer & Explanation Answer: C) Neither I nor II

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

1 18976
Q:

The missing number in the given series is:

15 (105) 14 , 13 (?) 12

A) 91 B) 78
C) 65 D) 68
 
Answer & Explanation Answer: B) 78

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

2 18970
Q:

Book is to chapter as organization is to

Answer

A book is consists of various chapters, so as the Organization consists of various departments. Therefore if Book is to chapter so organization is to department.


 


Hence, Book : Chapter :: Organisation : Department.

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Q:

Identify the diagram that best represents the relationship among the given classes.

Hindu, Muslim, Indian

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

Explanation:
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Filed Under: Image Analysis
Exam Prep: AIEEE , Bank Exams , CAT

1 18948
Q:

A train covers a distance between station A and station B in 45 min.If the speed of the train is reduced by 5 km/hr,then the same distance is covered in 48 min.what is the distance between the stations A and B ?

A) 80 kms B) 60 kms
C) 45 kms D) 32 kms
 
Answer & Explanation Answer: B) 60 kms

Explanation:

Let 'd' be the distance and 's' be the speed and 't' be the time
d=sxt
45 mins = 3/4 hr and 48 mins = 4/5 hr
As distance is same in both cases;
s(3/4) = (s-5)(4/5)
3s/4 = (4s-20)/5
15s = 16s-80
s = 80 km.
=> d = 80 x 3/4 = 60 kms.

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Filed Under: Problems on Trains
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19 18935
Q:

What should come in place of both the question marks in the equation

?128=162?

 

 

 

A) 12 B) 14
C) 144 D) 196
 
Answer & Explanation Answer: A) 12

Explanation:

Let x128=162x

 

Then, x2=128×162 =64×2×18×9=82×62×32 = 8×6×3 =144

 

x=12

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