Quantitative Aptitude - Arithmetic Ability Questions

Q:

The third proportional of two numbers 24 and 36 is

A) 48 B) 54
C) 72 D) 108
 
Answer & Explanation Answer: B) 54

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Q:

The distance between the points (7,7) and (k,-5) is 13. Find k?

A) -2 B) 4
C) -4 D) 2
 
Answer & Explanation Answer: D) 2

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Q:

For triangle PQR, what is the equation of altitude PS if co­ordinates of P, Q and R are (5,1), (0,­4) and (­2,3) respectively?

A) 7x + 2y = 33 B) 2x -­ 7y = 9
C) 2x -­ 7y = ­-3 D) 7x + 2y = -­33
 
Answer & Explanation Answer: B) 2x -­ 7y = 9

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Q:

The radii of two concentric circles are 68 cm and 22 cm. The area of the closed figure bounded by the boundaries of the circles is

A) 4140π sq.cm. B) 4110π sq.cm.
C) 4080π sq.cm. D) 4050π sq.cm.
 
Answer & Explanation Answer: A) 4140π sq.cm.

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Q:

The co-ordinates of the centroid of a triangle ABC are (1 , -4). What are the co-ordinates of vertex C if co-ordinates of A and B are (3 , -4) and (0 , 5) respectively?

A) (0 , 13) B) (0, 5)
C) (0, -5) D) (0 , -13)
 
Answer & Explanation Answer: D) (0 , -13)

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Q:

The line passing through (­3,4) and (0,3) is perpendicular to the line passing through (5,7) and (4,x). What is the value of x?

A) 4 B) -2
C) 2 D) -4
 
Answer & Explanation Answer: A) 4

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Q:

The areas of two similar triangles ΔABC and ΔPQR are 36 sq cms and 9 sq cms respectively. If PQ = 4 cm then what is the length of AB (in cm)?

A) 16 B) 12
C) 8 D) 6
 
Answer & Explanation Answer: C) 8

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Q:

If 3.5x = 0.07y, then find the result of [y-x / y+x]

A) 51/49 B) 49/53
C) 49/51 D) 53/57
 
Answer & Explanation Answer: C) 49/51

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