Quantitative Aptitude - Arithmetic Ability Questions

Q:

If cos 60° - sec 30° = x, then the value of x is

A) 1 B) (√3+√2)/2
C) (√3-4)/2√3 D) 1/√2
 
Answer & Explanation Answer: C) (√3-4)/2√3

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Q:

If 3P/7 = 4Q/11, then what is the ratio of P and Q respectively?

A) 12:77 B) 12:33
C) 28:33 D) 3:28
 
Answer & Explanation Answer: C) 28:33

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Q:

A, B and C can complete a task together in 10 days. A and B would need 12 days if only the two of them worked, while B and C would take 20 days if only the two of them worked. If B worked alone, how many days would she take to complete the task?

A) 30 B) 22
C) 45 D) 20
 
Answer & Explanation Answer: A) 30

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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

Volume of a cylinder is 2310 cubic cm. If circumference of its base is 44 cm, find the curved surface area of the cylinder?

A) 660 sq cm B) 1320 sq cm
C) 1980 sq cm D) 330 sq cm
 
Answer & Explanation Answer: A) 660 sq cm

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

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Q:

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

A) 2sec2A B) 2cosecA
C) 2cosec2A D) 2secA
 
Answer & Explanation Answer: C) 2cosec2A

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

The angle subtended by the chord of length 10 cm is 120° at the centre. Calculate the distance of the chord (in cm) from the centre.

 

 

A) 5/√3 B) 6/√3
C) 4/√3 D) 5/2√3
 
Answer & Explanation Answer: A) 5/√3

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Filed Under: Area
Exam Prep: Bank Exams

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Q:

In ΔDEF measure of angle E is 90 deg. If cotD = 8/15, and DE = 16cm, then what is the length (in cm) of side EF?

 

 

A) 34   B) 15  
C) 30   D) 14
 
Answer & Explanation Answer: C) 30  

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Filed Under: Area
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Q:

Expand : S + 23

A) S3+3S2+12S+8 B) S3+3S2+6S+8
C) S3+6S2+12S+8 D) S3+6S2+6S+8
 
Answer & Explanation Answer: C) S3+6S2+12S+8

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Filed Under: Simplification
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