Quantitative Aptitude - Arithmetic Ability Questions

Q:

If w : 0.80 :: 9 : 6, w = ?

A) 2.5 B) 1.1
C) 3.3 D) 1.2
 
Answer & Explanation Answer: D) 1.2

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Q:

What is the area (in sq cm) of a regular hexagon of side 9 cm?

A) 50√3 B) 300√3
C) 243√3/2 D) 200√3
 
Answer & Explanation Answer: C) 243√3/2

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Filed Under: Simplification
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Q:

If Sin θ = 12/13, then what is the value of Cot θ?

A) 13/12 B) 5/13
C) 5/12 D) 13/5
 
Answer & Explanation Answer: C) 5/12

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Q:

If tan(A/2) = x, then the value of x is

A) √[(1 + cosA)/(1 -­ cosA)] B) (1 -­ cosA)/(1 + cosA)
C) (1 + cosA)/(1 -­ cosA) D) √[(1 -­ cosA)/(1 + cosA)]
 
Answer & Explanation Answer: D) √[(1 -­ cosA)/(1 + cosA)]

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Q:

In a bag the ratio of red balls to green balls is 4 : 9. If 6 more green balls were added to the bag, the ratio of red balls to green balls would become 1 : 3. How many red balls are there in the bag?

A) 9 B) 10
C) 8 D) 12
 
Answer & Explanation Answer: C) 8

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Q:

The orthocentre of an obtuse­angled triangle lies

A) inside the triangle B) outside the triangle
C) on one side of a triangle D) none of these
 
Answer & Explanation Answer: B) outside the triangle

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Q:

The fraction from the ones listed below that will NOT lead to a recurring decimal is

A) 8/56 B) 6/56
C) 4/56 D) 7/56
 
Answer & Explanation Answer: D) 7/56

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Filed Under: Decimal Fractions
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Q:

The mean of 10 observations is 17. One more observation is included and the new mean becomes 16. The 11th observation is

 

A) 16 B) 8
C) 6 D) 12
 
Answer & Explanation Answer: C) 6

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