Quantitative Aptitude - Arithmetic Ability Questions

Q:

A work can be completed by 18 boys in 24 days. If 6 boys leave after working for 12 days, then how many days will be needed to complete the remaining work?

 

A) 12 B) 15
C) 18 D) 24
 
Answer & Explanation Answer: C) 18

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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

Deepti bought a set of cups for Rs. 175, but then had to sell it later to clear old stocks for Rs. 161. What is the percentage of loss that she had to incur?

A) 16 B) 8
C) 7 D) 14
 
Answer & Explanation Answer: B) 8

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

Of the 3 numbers whose average is 40, the first is 1/3 rd the sum of other 2. What is the first number?

A) 20 B) 50
C) 25 D) 30
 
Answer & Explanation Answer: D) 30

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Filed Under: Average
Exam Prep: Bank Exams

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Q:

Given that the polynomial (x2+ ax+ b) leaves that same remainder when by (x –1) or (x + 1) What are the values of a and b respectively?

A) 4 and 0 B) 0 and 3
C) 3 and 0 D)  0 and any interger
 
Answer & Explanation Answer: D)  0 and any interger

Explanation:

Since x^2+ ax + b when divided by x-1 or x+1 leaves the same remainder

So on putting x=1 and x=-1 we get the same value

1+a+b = 1-a+b

2a=0

a=0

here b can take any value as it will always get cancelled out

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Filed Under: Numbers
Exam Prep: Bank Exams

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Q:

Two students appeared for an examination. One of them secured 22 marks more than the other and his marks were 55% of the sum of their marks. The marks obtained by them are _______.

A) 121 and 99 B) 43 and 21
C) 58 and 36 D) 86 and 64
 
Answer & Explanation Answer: A) 121 and 99

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

If cosA/(1 - sinA) = x, then the value of x is

A) secA - tanA B) cosecA + tanA
C) secA + tanA D) cosecA - tanA
 
Answer & Explanation Answer: C) secA + tanA

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

What is the value of sin 330°?

A) 2 B) 2/√3
C) √2 D) -1/2
 
Answer & Explanation Answer: D) -1/2

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

What is the reflection of the point (2, 3) in the line y = 4?

A) (2, 5) B) (2, -5)
C) (-2, -5) D) (-2, 5)
 
Answer & Explanation Answer: A) (2, 5)

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Filed Under: Simplification
Exam Prep: Bank Exams

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