Quantitative Aptitude - Arithmetic Ability Questions

Q:

What is the value of tan3A?

A) (3tanA -­ tan3A)/(1 -­ 3tan2A) B) (3tanA + tan3A)/(1 + 3tan2A)
C) (3tanA -­ tan3A)/(1 + 3tan2A) D) (3tanA + tan3A)/(1-­ 3tan2A)
 
Answer & Explanation Answer: A) (3tanA -­ tan3A)/(1 -­ 3tan2A)

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Q:

While selling a watch, a shop-­keeper gives a discount of 5%. If he gives a discount of 7%, he earns Rs.15 less as profit. The marked price of the watch is

A) 697.5 B) 712.5
C) 750 D) None of the these
 
Answer & Explanation Answer: C) 750

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Q:

If x - y = -9 and xy = -20, then find x2 + y2 ?

A) 61 B) 41
C) 81 D) 51
 
Answer & Explanation Answer: B) 41

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Q:

A line passing through the origin perpendicularly cuts the line 2x + 3y = 6 at point M. Find M?

A) (6/11, 9/11) B) (6/7, 9/7)
C) (6/11, -9/11) D) (-6/7, 9/7)
 
Answer & Explanation Answer: A) (6/11, 9/11)

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Q:

The area of a circle is 616 sq.m. Find its diameter.

A) 7 m B) 14 m
C) 28 m D) 56 m
 
Answer & Explanation Answer: C) 28 m

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Q:

The costs of daily ticket of local train is Rs. 50 and Monthly Pass costs is Rs. 1125. If I buy the Monthly Pass and travel for 30 days in a month then I save?

A) 10 percent B) 25 percent
C) 14 percent D) 15 percent
 
Answer & Explanation Answer: B) 25 percent

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Q:

Product of 6ab, 3b and 4a is

A) 72a2b2 B) 144ab
C) 72ab D) 144a2b2
 
Answer & Explanation Answer: A) 72a2b2

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Q:

Calculate the angle subtended by the chord at the point on the major arc if the radius and the chord of the circle are equal in length.

A) 30° B) 120°
C) 200° D) 300°
 
Answer & Explanation Answer: A) 30°

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