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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

A) (5, 10, 15) B) (7, 14, 21)
C) (6, 12, 18) D) (8, 16, 28)
 
Answer & Explanation Answer: D) (8, 16, 28)

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Filed Under: Odd Man Out
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Q:

In the following question, select the odd word from the given alternatives.

A) Mars B) Venus
C) Planet D) Mercury
 
Answer & Explanation Answer: C) Planet

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Filed Under: Odd Man Out
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Q:

The LCM of 48 and 54 is

A) 6 x 8 x 9 B) 48 x 54
C) 6 x 2 x 9 D) 6 x 8 x 3
 
Answer & Explanation Answer: A) 6 x 8 x 9

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Filed Under: HCF and LCM
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Q:

The 4th and 7th term of an arithmetic progression are 11 and -4 respectively. What is the 15th term?

A) -49 B)  -44
C) -39 D) -34
 
Answer & Explanation Answer: B)  -44

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Filed Under: Numbers
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Q:

In ΔDEF measure of angle E is 90 deg. If cotD = 8/15, and DE = 16cm, then what is the length (in cm) of side EF?

 

A) 34   B) 15  
C) 30   D) 14
 
Answer & Explanation Answer: C) 30  

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Filed Under: Area
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Q:

The corners of a square of side ‘a’ are cut away so as to form a regular octagon. What is the side of the octagon?

A) a(√2 –1) B) a(√3 –1)
C) a/√2+2 D) a/3
 
Answer & Explanation Answer: A) a(√2 –1)

Explanation:

Since we are forming a regular octagon

so AE = AL = FB = BG and so on

So AE = SB = x/√2

AE + EF + FB = side of square = a (Given)

So x/√2 + x + x/√2 = a

X = a/(√2+1) = a(√2 -1)

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Filed Under: Volume and Surface Area
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Q:

Find the total surface area (in cm²) of a right circular cone of diameter 14 cm and slant height 10 cm.

 

A) 374 B) 570
C) 428 D) 524
 
Answer & Explanation Answer: A) 374

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Filed Under: Volume and Surface Area
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Q:

The triangle ABC and DEF are similar to each other. The measure of the angle A and E is 67 and 83 degree respectively. What is the value of angle C?

A) 20°   B) 30°
C) 40° D) 50°
 
Answer & Explanation Answer: B) 30°

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Filed Under: Volume and Surface Area
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