Quantitative Aptitude - Arithmetic Ability Questions

Q:

If 1/√(1 -­ sin2A) = x, then the value of x is

A) tanA B) cosecA
C) secA D) cosA
 
Answer & Explanation Answer: C) secA

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Q:

What is the value of ( 1/2 - cot45) ?

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

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Q:

Select the odd word/letters/number/number pair from the given alternatives.

A) 51 B) 76
C) 96 D) 92
 
Answer & Explanation Answer: A) 51

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Q:

If cotθ = 4, then the value of 5sinθ+3cosθ5sinθ-3cosθ is

A) 1/9 B) 1/3
C) 3 D) 9
 
Answer & Explanation Answer: D) 9

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Q:

If 2cosAsinB = x, then the value of x is?

A) sin(A+B) + sin(A­-B) B) cos(A+B) + cos(A­-B)
C) sin(A+B) ­- sin(A-­B) D) cos(A­-B) -­ cos(A+B)
 
Answer & Explanation Answer: C) sin(A+B) ­- sin(A-­B)

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Q:

If the shopkeeper sells an item at Rs 1000 which is marked as Rs 1250, then what is the discount he is offering?

A) 25 percent B) 33.3 percent
C) 250 percent D) 20 percent
 
Answer & Explanation Answer: D) 20 percent

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Q:

30% discount is offered on an item. By applying a promo code the customer wins 20% cash back. What is the effective discount?

A) 44 percent B) 52.8 percent
C) 50 percent D) 26 percent
 
Answer & Explanation Answer: A) 44 percent

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Q:

If tan(A/2) = x, then the value of x is

A) (1 - cosA)/sinA B) (1 + cosA)/sinA
C) √[(1 - cosA)/sinA] D) √[(1 + cosA)/sinA]
 
Answer & Explanation Answer: A) (1 - cosA)/sinA

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