Quantitative Aptitude - Arithmetic Ability Questions

Q:

The average of 10 numbers is 30. If at the time of calculation one number was wrongly taken as 36 instead of 69, then what will be the correct average?

A) 33 B) 33.3
C) 36 D) 39
 
Answer & Explanation Answer: B) 33.3

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Q:

What is the reflection of the point (-3, 1) in the line x = -2?

A) (-1 , 1) B) (-3 , -5)
C) (1 , 1) D) (-3 , 5)
 
Answer & Explanation Answer: A) (-1 , 1)

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Q:

Find equation of the perpendicular to segment joining the points A(0,4) and B(-5,9) and passing through the point P. Point P divides segment AB in the ratio 2:3.

A) x - y = 8 B) x - y = -8
C) x + y = -8 D) x + y = 8
 
Answer & Explanation Answer: B) x - y = -8

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Q:

The ratio of angles of a triangle are 1 : 2/3 : 3. Then the smallest angle is

A) 21 4/7° B) 25°
C) 25 5/7° D) 38 4/7°
 
Answer & Explanation Answer: C) 25 5/7°

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Q:

The value of k, for which the quadratic equation 4x2 + 43x + k = 0 has equal roots is

 

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

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Filed Under: Simplification
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Q:

Find out the odd word/letters/number/number pair from the given alternatives.

A) 992 B) 848
C) 749 D) 777
 
Answer & Explanation Answer: D) 777

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Filed Under: Odd Man Out
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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) (7, 36, 21) B) (9, 46, 27)
C) (11, 56, 33) D) (22, 106, 63)
 
Answer & Explanation Answer: D) (22, 106, 63)

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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) (47, 44, 41) B) (49, 46, 43)
C) (59, 56, 53) D)  (91, 88, 84)
 
Answer & Explanation Answer: D)  (91, 88, 84)

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Filed Under: Odd Man Out
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