Quantitative Aptitude - Arithmetic Ability Questions

Q:

If x + y = 12 and x2 + y2 = 94, then xy is 

A) 25 B) 50
C) 144 D) 238
 
Answer & Explanation Answer: A) 25

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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:

What is the value of sin 5π/3?

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

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Q:

If 7x - [3(2x - 3)]/2 = 1/2, then what is the value of x?

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

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Q:

If a cylinder of radius 4.3 cm and height 4.8 cm is melted and constructed into a cone of the same radius, what will be the height of this cone? (Use π = 22/7)

A) 28.8 cm B) 14.4 cm
C) 7.2 cm D) 21.6 cm
 
Answer & Explanation Answer: B) 14.4 cm

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Q:

What is the average of 36, 43, 51, 68, and 77?

A) 47 B) 49
C) 55 D) 64
 
Answer & Explanation Answer: C) 55

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Q:

The surface areas of three faces of a cuboid sharing a vertex are 20, 32 and 40 sq. mts. What is the volume of the cuboid in cub. m?

A) √3024 B) 184
C) 160 D) 92
 
Answer & Explanation Answer: C) 160

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Filed Under: Volume and Surface Area
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Q:

If 2x-2x=1 (x0), then the value of x3-1x3 is

A) 134 B) 138
C) 174 D) 178
 
Answer & Explanation Answer: B) 138

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