Quantitative Aptitude - Arithmetic Ability Questions

Q:

Expand and simplify (x + 5)2 + (x - 3)2

A) 2(x2 + 2x - 17) B) 2(x2 - 2x + 17)
C) 2(x2 - 2x - 17) D) 2(x2 + 2x + 17)
 
Answer & Explanation Answer: D) 2(x2 + 2x + 17)

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Q:

In triangle ABC, a line is drawn from the vertex A to a point D on BC. If BC = 9 cm and DC = 3 cm, then what is the ratio of the areas of triangle ABD and triangle ADC respectively?

A) 1 : 1 B) 2 : 1
C) 3 : 1 D) 4 : 1
 
Answer & Explanation Answer: B) 2 : 1

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Q:

The area of a semicircle is 1925 sq.cm. Calculate its perimeter (in cm).

A) 360 B) 80
C) 160 D) 180
 
Answer & Explanation Answer: D) 180

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Q:

If the sum of squares of three consecutive natural number is 2702. Then, what will be the middle number?

 

A) 29 B) 30
C) 31 D) 32
 
Answer & Explanation Answer: B) 30

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Q:

What is that least digit that must be added to the product 5786 × 5784 to make it a perfect square?

 

A) 1 B) 6
C) 5 D) 4
 
Answer & Explanation Answer: A) 1

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Q:

There are a total of 200 students in a school, of which 7/10th are boys. Find the number of girls in the school.

A) 80 B) 60
C) 40 D) 120
 
Answer & Explanation Answer: B) 60

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Q:

What is the value of (√3 - sec60) ?

A) √3-2 B) (1-√6)/√2
C) (2√3-√6)/2√2 D) (1-3√2)/3
 
Answer & Explanation Answer: A) √3-2

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Q:

If 3 dozen guavas cost Rs. 90, how many guavas can be bought for Rs. 240?

A) 98 B) 96
C) 102 D) 90
 
Answer & Explanation Answer: B) 96

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