Quantitative Aptitude - Arithmetic Ability Questions

Q:

Diameter of a car wheel is 21 cm. A car driver moving at the speed of 66 km/hr takes 36 seconds to reach a destination. How many revolutions will the wheel make during the journey?

 

 

A) 1800   B) 1500
C) 1200   D) 1000
 
Answer & Explanation Answer: D) 1000

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Filed Under: Time and Distance
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Q:

If sec -7π/4 = x, then the value of x is

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

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Q:

Amit's age is four times the age of Babli. Babli's age is three times the age of Priya. If the present age of Priya is 5 years, what is the present age (in years) of Amit?

A) 65 B) 45
C) 55 D) 60
 
Answer & Explanation Answer: D) 60

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Filed Under: Problems on Ages
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Q:

The reciprocal of the sum of the reciprocals of 3/8 and 8/11 is:

A) 97/24 B) 24/97
C) 88/97 D) 97/88
 
Answer & Explanation Answer: B) 24/97

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Filed Under: Problems on Numbers
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Q:

If 5 ­ 3x < 4 ­ x and 5(2 ­ x) > 2 ­ 2x, then x can take which of the following values?

A) 0 B) 1
C) 3 D) -1
 
Answer & Explanation Answer: B) 1

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Filed Under: Simplification
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Q:

If α and β are the roots of the equation x2+ x  1 = 0, then what is the equation whose roots are α5 and β5?

A) x2 + 7x – 1 = 0 B) x2 – 7x – 1 = 0
C) x2 – 11x – 1 = 0 D) x2 + 11x – 1 = 0
 
Answer & Explanation Answer: D) x2 + 11x – 1 = 0

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Filed Under: Simplification
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Q:

If x = 2 +√3, y = 2 – √3 and z = 1, then what is the value of (x/yz) + (y/xz) + (z/xy) + 2 [(1/x) + (1/y) + (1/z)]?

A) 25 B) 22
C) 17 D) 43
 
Answer & Explanation Answer: A) 25

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Q:

Simplify : 132 - 142 + 172 - 250 = ?

A) 196 B) 169
C) 121 D) 144
 
Answer & Explanation Answer: D) 144

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Filed Under: Simplification
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