Quantitative Aptitude - Arithmetic Ability Questions

Q:

If cosA + cos2A = 1 then the value of sin2A + sin4A is

A) 1/2 B) 1/4
C) 1 D) 0
 
Answer & Explanation Answer: C) 1

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Q:

Which of the following equations has the sum of its roots as 11?

A) x2 - 11x + 18 = 0 B) x2 - 7x + 10 = 0
C) x2 + 2x - 26 = 0 D) x2  + 5x - 6 = 0
 
Answer & Explanation Answer: A) x2 - 11x + 18 = 0

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Q:

If 2x - 3 = 3x - 5, then the numerical value of  (x - 3)2 is

A) 5 B) 1
C) -5 D) -1
 
Answer & Explanation Answer: B) 1

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Q:

If ( x - 5)2 + (y - 2)2 + (z - 9)2 = 0 , then value of (x + y - z) is

A) 16 B) -1
C) -2 D) 12
 
Answer & Explanation Answer: C) -2

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Q:

If x – 4y = 0 and x + 2y = 24, then what is the value of (2x + 3y)/(2x – 3y)?

A) 9/5 B) 11/5
C) 13/7 D) 9/7
 
Answer & Explanation Answer: B) 11/5

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Q:

If secA = x, then the value of x is

A) √(1 -­ cot2A) B) √(1 -­ tan2A)
C) √(1 + cot2A) D) √(1 + tan2A)
 
Answer & Explanation Answer: D) √(1 + tan2A)

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Q:

What is the reflection of the point (-0.5, 6) in the x-axis?

A) (0.5, -6) B) (-6, -0.5)
C) (6, -0.5) D) (-0.5, -6)
 
Answer & Explanation Answer: D) (-0.5, -6)

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Q:

If the side of a square is increased by 20%, then what will be the percentage increase in its perimeter?

 

A) 20 B) 40
C) 100 D) 50
 
Answer & Explanation Answer: A) 20

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