Aptitude and Reasoning Questions

Q:

The variance of a set of data is 121. Then the standard deviation of the data is

A) +-11 B) 11
C) 21 D) 60.5
 
Answer & Explanation Answer: B) 11

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Filed Under: Probability
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Q:

4 + 16 x -12 x 24 - 13 - 3 ÷ 20 - 4 = ?

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

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Q:

Find the number that is as much greater than 39 as is less than 79.

A) 42 B) 49
C) 55 D) 59
 
Answer & Explanation Answer: D) 59

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Filed Under: Problems on Numbers
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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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Filed Under: Problems on Trains
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Q:

What is the equation of the line if its slope is 1/4 and y-­intercept is ­-3?

A) x ­- 4y = 12 B) x + 4y = 12
C) x -­ 4y = ­-12 D) x + 4y = -­12
 
Answer & Explanation Answer: A) x ­- 4y = 12

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Q:

A can do a work in 15 days and B in 20 days. If they work on it together for 6 days, then what fraction of work is left?

A) 1/4 B) 2/9
C) 1/5 D) 3/10
 
Answer & Explanation Answer: D) 3/10

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Filed Under: Time and Work
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Q:

Length of the sides of a triangle are a, b, c respectively. If a2 + b2 + c2 = ab +bc + ca then the triangle is

A) isosceles B) equilateral
C) scalene D) right­-angled
 
Answer & Explanation Answer: B) equilateral

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Filed Under: Volume and Surface Area
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Q:

What is the simplified value of (sec4 A  tan2 A)  (tan4 A + sec2 A)?

A) -1 B) 1/2
C) 1 D) 0
 
Answer & Explanation Answer: D) 0

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