Quantitative Aptitude - Arithmetic Ability Questions

Q:

The ratio between Ram's age and Rahim's age is 10:11. What is the age of Rahim in percentage of Ram's age

A) 109111% B) 110%
C) 11119% D) 111%
 
Answer & Explanation Answer: B) 110%

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Q:

Two chords AB and PQ of a circle intersect at D inside a circle. If AD = 4 cm, DB = 6 cm, QD = 3 cm, the length of PQ is equal to

A) 11 cm B) 8 cm
C) 9 cm D) 10 cm
 
Answer & Explanation Answer: A) 11 cm

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Q:

cos(A+B) + cos(A-B) is equal to

A) 2cosAcosB B) 2sinAsinB
C) 2sinAcosB D) 2cosAsinB
 
Answer & Explanation Answer: A) 2cosAcosB

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Q:

A factory buys 8 machines. 3 Machine­A, 4 Machine­B and rest Machine­C. Prices of the machines are Rs 45000, Rs 25000 and Rs 35000 respectively. Calculate the average cost (in Rs) of these machines?

A) 33750 B) 35000
C) 36250 D) 32250
 
Answer & Explanation Answer: A) 33750

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Q:

A train is moving at the speed of 36 km/hr. How many seconds it will take to cover a distance of 600 meters?

A) 60 B) 120
C) 30 D) 40
 
Answer & Explanation Answer: A) 60

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Q:

In an arithmetic progression, if 9 is the 5th term, -26 is the 12th term, then -6 is which term?

A) 11 B) 8
C) 10 D) 7
 
Answer & Explanation Answer: B) 8

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Q:

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

A) (sinA/(1 + cosA))2 B) cosA/(1 + sinA)
C) (cosA/(1 + sinA))2 D) sinA/(1 + cosA)
 
Answer & Explanation Answer: C) (cosA/(1 + sinA))2

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Q:

What is the value of cos2A/(1 + sinA)?

A) 1 + sinA B) 1 ­- sinA
C) 1 -­ secA D) 1 + secA
 
Answer & Explanation Answer: B) 1 ­- sinA

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