Quantitative Aptitude - Arithmetic Ability Questions

Q:

What is the average of first 30 multiples of 9?

A) 142 B) 138.5
C) 139.5 D) 143.5
 
Answer & Explanation Answer: C) 139.5

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Q:

In a Δ ABC, DE || BC. D and E lie on AB and AC respectively. If AB = 7 cm and BD = 3cm, then find BC:DE

A) 2:2 B) 3:2
C) 3.5:2 D) 7:2
 
Answer & Explanation Answer: C) 3.5:2

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Q:

In  ABC, the height CD intersects AB at D. The midpoints of AB and BC are P and Q respectively. If AD = 8 cm and CD = 6 cm, then the length of PQ is?

A) 3 cm B) 7 cm
C) 9 cm D) 5 cm
 
Answer & Explanation Answer: D) 5 cm

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Q:

The average of runs scored by a cricketer in his 99 innings is 99. How many runs will he have to score in his 100th innings so that his average of runs in 100 innings may be 100?

A) 100 B) 99
C) 199 D) 101
 
Answer & Explanation Answer: C) 199

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Filed Under: Average
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Q:

What is the value of cot 11π/6?

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

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Filed Under: Simplification
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Q:

The LCM of 72 and 84 is:

A) 12 × 6 × 7 B) 6 × 2 × 7
C) 12 × 7 × 3 D) 72 × 84
 
Answer & Explanation Answer: A) 12 × 6 × 7

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Filed Under: HCF and LCM
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Q:

Point P (-2, 5) is the midpoint of segment AB. Co-ordinates of A are (-5, y) and B are (x, 3). What is the value of x?

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

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Q:

What is the sum of the first 12 terms of an arithmetic progression if the 3rd term is -13 and the 6th term is -4?

A) 67 B) 45
C) -30 D) -48
 
Answer & Explanation Answer: C) -30

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