Quantitative Aptitude - Arithmetic Ability Questions

Q:

In triangle ABC, BAC = 90 deg and AD is perpendicular to BC. If AD = 6cm and BD = 4cm, then the length of BC is

A) 10 cm B) 12 cm
C) 13 cm D) 15 cm
 
Answer & Explanation Answer: C) 13 cm

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Filed Under: Volume and Surface Area
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Q:

Find the perimeter (in cm) of a semicircle of radius 14 cm.

A) 144 B) 46
C) 72 D) 92
 
Answer & Explanation Answer: C) 72

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Filed Under: Volume and Surface Area
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Q:

Of the 3 numbers whose average is 64, the first number is 1/3 times the sum of other 2. The first number is

A) 72 B) 32
C) 96 D) 48
 
Answer & Explanation Answer: D) 48

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Filed Under: Numbers
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Q:

Calculate the ratio of the area of two similar triangles if the sides of the triangles are in the ratio of 9:4.

 

A) 9:4   B) 3:2  
C) 81:16 D) 27:8
 
Answer & Explanation Answer: C) 81:16

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Filed Under: Ratios and Proportions
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Q:

Find the HCF of 48, 92 and 140

A) 8 B) 6
C) 4 D) 3
 
Answer & Explanation Answer: C) 4

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Filed Under: HCF and LCM
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Q:

Select the odd number from the given alternatives.

A) 15 B) 20
C) 40 D) 60
 
Answer & Explanation Answer: A) 15

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Filed Under: Odd Man Out
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Q:

The surface area of a sphere is 5544 cm2. Find its diameter (in cm).

A) 42 B) 21
C) 84 D) 63
 
Answer & Explanation Answer: A) 42

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Filed Under: Volume and Surface Area
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Q:

If (a+1a)2=3, then the value of a6-1a6 will be

A) 1 B) 3
C) 0 D) 2
 
Answer & Explanation Answer: C) 0

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