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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

If p = 72-72-72-72-.....∞, then find the value of 2p2+1?

 

A) -129 B) -163
C) 129 D) 163
 
Answer & Explanation Answer: C) 129

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Q:

The average of 11 numbers is 10.9. If the average of the first six numbers is 10.5 and that of the last six numbers is 11.4, then the middle number is :

A) 10.5 B) 11.5
C) 12.5 D) 13.5
 
Answer & Explanation Answer: B) 11.5

Explanation:

Middle numbers  =  [(10.5 x 6 + 11.4 x 6) - 10.9 x 11] = (131.4 - 119-9) = 11.5.

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Q:

Find the value of 76413+ 2713314

 

A) 7 B) 6
C) 49 D) 343
 
Answer & Explanation Answer: A) 7

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Q:

What is the value of (cosec60 - 1/2) ?

 

A) (4-√3)/2√3   B) (2√3-1)/√3  
C) (3√3-1)/3   D) 1/√3
 
Answer & Explanation Answer: A) (4-√3)/2√3  

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Q:

35+37=?

 

A) 935 B) 612
C) 1135 D) 635
 
Answer & Explanation Answer: C) 1135

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Q:

If x = 4 + √15, then what is the value of [x2 + (1/x2)]?

 

A) 62 B) 64
C) 34 D) 36
 
Answer & Explanation Answer: A) 62

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Q:

The total age of A and B is 12 years more than the total age of B and C. C is how many years younger than A ?

A) 12 B) 13
C) 14 D) 15
 
Answer & Explanation Answer: A) 12

Explanation:

(A+B) - (B+C) = 12

 

A - C = 12.

 

C is younger than A by 12 years.

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Filed Under: Problems on Ages

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Q:

What is the value of 88% of 1125 + 20% of 425?

 

A) 1025 B) 1125.2
C) 1075 D) 1055
 
Answer & Explanation Answer: C) 1075

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Filed Under: Percentage
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