Quantitative Aptitude - Arithmetic Ability Questions

Q:

Which of the following is correct?

A) (4x + 5y)(5x - 4y) = 20x2 + 9xy - 20y2 B) (4x + 5y)(5x - 4y) = 20x2 + 41xy - 20y2
C) (4x + 5y)(5x - 4y) = 20x2 - 9xy + 20y2 D) (4x + 5y)(5x - 4y) = 20x2 - 41xy + 20y2
 
Answer & Explanation Answer: A) (4x + 5y)(5x - 4y) = 20x2 + 9xy - 20y2

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Q:

What are the co­ordinates of the mid point of the segment joining points C(5,­-2) and D(­-1,8).

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

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Q:

The length of one side of a rhombus is 41 cm and its area is 720 sq.cm. What is the sum of the lengths of its diagonals?

A) 82 cm B) 90 cm
C) 98 cm D) 80 cm
 
Answer & Explanation Answer: C) 98 cm

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Q:

What must be the length (in cm) of the diagonal of a rectangle if its area and breadth are 120 sq.cm and 8 cm respectively ?

A) 34 B) 17
C) 15 D) 30
 
Answer & Explanation Answer: B) 17

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Q:

The radius and height of a solid cylinder are increased by 2% each. What will be the approximate percentage increase in volume?

A) 6.76 B) 5.88
C) 6.12 D) 3.34
 
Answer & Explanation Answer: C) 6.12

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Q:

If 3P/7 = 4Q/11, then what is the ratio of P and Q respectively?

A) 12:77 B) 12:33
C) 28:33 D) 3:28
 
Answer & Explanation Answer: C) 28:33

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Q:

Find the perimeter (in cm) of a semicircle of radius 14 cm.

A) 144 B) 46
C) 72 D) 92
 
Answer & Explanation Answer: C) 72

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Q:

By dividing 14528 by a certain number, Suresh gets 83 as quotient and 3 as remainder. What is the divisor?

A) 165 B) 185
C) 195 D) 175
 
Answer & Explanation Answer: D) 175

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