Quantitative Aptitude - Arithmetic Ability Questions

Q:

What is the length of the side of an equilateral triangle, if its area is 36√3 sq cm?

A) 6 cm B) 24 cm
C) 12 cm D) 18 cm
 
Answer & Explanation Answer: C) 12 cm

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Filed Under: Area
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Q:

What is the reflection of the point (3,-5) in the origin?

A) (-3, -5) B) (5,-3)
C) (-5,-3) D) (-3, 5)
 
Answer & Explanation Answer: D) (-3, 5)

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Filed Under: Simplification
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Q:

Find k, if the line 4x - y = 1 is perpendicular to the line 5x - ky = 2?

A) 20 B) -20
C) 4 D) -4
 
Answer & Explanation Answer: B) -20

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Q:

A car travels a certain distance at 32 km/h and comes back at 68 km/h. What is the average speed for total journey?

A) 50 km/hr B) 37.04 km/hr
C) 43.52 km/hr D) 56.48 km/hr
 
Answer & Explanation Answer: C) 43.52 km/hr

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Filed Under: Time and Distance
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Q:

Average age of 4 daughters of a family is 12 years. The average age of daughters and their parents is 26 years. If the mother is 4 years older than the father, then what is the age (in years) of the father?

 

 

A) 56 B) 52
C) 48 D) 44
 
Answer & Explanation Answer: B) 52

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Filed Under: Problems on Ages
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Q:

In a cricket match, the scores of the players are considered such that coefficient of variation of scores is 16 and mean is 25 then the variance is

 

A) 12 B) 8
C) 16 D) 4
 
Answer & Explanation Answer: C) 16

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Filed Under: Average
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Q:

What is the value of sin ­7π/4c?

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

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Q:

A vendor buys 6 bananas for Rs 25 and sells them at 3 for Rs 20. What is his profit percentage?

A) 50 B) 40
C) 60 D) 30
 
Answer & Explanation Answer: C) 60

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Filed Under: Profit and Loss
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