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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

If cos 240° = x, then value of x is

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

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Q:

A square ground is to be covered by planting 100 saplings on each side. How many saplings are needed in all?

 

A) 400 B) 404
C) 396 D) 408
 
Answer & Explanation Answer: C) 396

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Q:

The solution set of 4x - 3y = 47 and 3x + y = 32 is

A) {(15, 3)} B) {(4, 12)}
C) {(11, -1)} D) {(12, 3)}
 
Answer & Explanation Answer: C) {(11, -1)}

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Q:

If (tanA ­- tanB)/(1 + tanAtanB) = x, then the value of x is

A) tan(A -­ B) B) tan(A + B)
C) cot(A ­- B) D) cot(A + B)
 
Answer & Explanation Answer: A) tan(A -­ B)

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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 sum of Rs.1000 amount to Rs.1331 in 3 years, compounded annually. Then, find the rate of interest per annum?

A) 15% B) 30%
C) 10% D) 20%
 
Answer & Explanation Answer: C) 10%

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Q:

Δ LMN is right angled at M. If m∠N = 60 deg., then Tan L =______.

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

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Q:

If tanA + tanB = X, then the value of X is

A) (tanA - tanB)/(1 + tanAtanB) B) (tanA + tanB)/(1 - tanAtanB)
C) (tanA + tanB)/(1 + tanAtanB) D) (tanA - tanB)/(1 - tanAtanB)
 
Answer & Explanation Answer: B) (tanA + tanB)/(1 - tanAtanB)

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