Aptitude and Reasoning Questions

Q:

66 cubic centimetres of silver is drawn into a wire 1 mm in diameter. The length of the wire in metres will be:

A) 84 B) 90
C) 168 D) 336
 
Answer & Explanation Answer: A) 84

Explanation:

Let the length of the wire be h. 

Radius  r =1/2 mm = 1/20 cm  

πr2h = 66  

=> h= (66 x 20 x 20) x (7/22) = 8400cm = 84m 

 

 

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Q:

A house owner wants to get his house painted. He is told that this would require 45 kg of paint allowing 6% wasting. And if the paint is available in 4 kg tins only, the number of tins required for painting the house is ?

A) 12 B) 13
C) 11 D) 10
 
Answer & Explanation Answer: A) 12

Explanation:

Given 45 kg for painting 

And 6% 0f 45 for wasting => 6x45/100 = 2.7 kg

Now total paint required = 45+2.7 = 47.7 kgs

But tins are available in only 4kgs

Then, no. of tins req = 47.7/4 = 11.4 => 12 tins

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

14 11243
Q:

In a certain code, '289' means 'read from paper'; '276' means 'tea from field' and '85' means 'wall paper'. Which of the following is the code for 'paper' ?

A) 2 B) 8
C) 9 D) Can't be determined
 
Answer & Explanation Answer: B) 8

Explanation:

Justification:      

In the first and second statements, the common digit is '2' and the common word is 'from'.

So, '2' is the code for 'from'.

In the first and third statements, the common  code digit is '8' and the common word is 'paper'.

So, '8' is the code for 'paper'.

As shown above, '8' is the code for 'paper'.

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Filed Under: Coding and Decoding

48 11240
Q:

The given graph shows the distribution of minerals in the human body?

 

 

Based on the given data, what is the ratio of the metal with the second highest percentage of distribution to that with the second lowest percentage of distribution in the human body?

 

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

Explanation:
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Filed Under: Pie Charts
Exam Prep: Bank Exams

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Q:

Reena took a loan of Rs. 1200 with simple interest for as many years as the rate of Interest. If she paid Rs. 432 as interest at the end of the loan period, what was the rate of interest?

A) 3.6 B) 6
C) 18 D) cannot be determined
 
Answer & Explanation Answer: B) 6

Explanation:

Let rate = R% and time = R years.

 

Then, 1200×R×R100=432

 12R2=432

 

=> R = 6.

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Filed Under: Simple Interest
Exam Prep: GRE
Job Role: Bank PO

6 11234
Q:

Sonika invested an amount of Rs.5800 for 2 years. At what rate of compound interest will she get an amount of Rs.594.50 at the end of 2 years ?

A) 6.5% B) 6%
C) 5% D) 4.5%
 
Answer & Explanation Answer: C) 5%

Explanation:

C.I = P1+r100t-1

 

594.5 = 58001+r1002-1

 594.55800+1=1+r1002

 

r100=1.05-1=0.05=> r = 5 % .

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Filed Under: Compound Interest
Exam Prep: GRE , GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

13 11232
Q:

 On what dates of April, 2001 did Wednesday fall ?

A) 1st, 8th, 15th, 22nd, 29th B) 2nd, 9th, 16th, 23rd, 30th
C) 3rd, 10th, 17th, 24th D) 4th, 11th, 18th, 25th
 
Answer & Explanation Answer: D) 4th, 11th, 18th, 25th

Explanation:

ke

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Filed Under: Calendar

10 11232
Q:

A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number ? 

A) 2 B) 4
C) 6 D) 8
 
Answer & Explanation Answer: D) 8

Explanation:

Let the number be v. Then, 3 (2x + 9) = 75.

 2x + 9 = 25

=> 2x = 16

=> x = 8

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Filed Under: Problems on Numbers

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