Quantitative Aptitude - Arithmetic Ability Questions

Q:

If a + b = 8 and ab =15, then a3 + b3 is

A) 224 B) 244
C) 152 D) 128
 
Answer & Explanation Answer: C) 152

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Q:

After excluding stoppages, the speed of a bus is 60 kmph and after including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?

A) 10 B) 9
C) 12 D) 15
 
Answer & Explanation Answer: D) 15

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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:

Find the volume (in cm3) of a right circular cylinder of diameter 21 cm and height 10 cm.

A) 3118 B) 3275
C) 3621 D) 3465
 
Answer & Explanation Answer: D) 3465

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Filed Under: Area
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Q:

A basket contains 300 mangoes . 75 mangoes were distributed among some students . Find the percentage of mangoes left in the basket

A) 70% B) 72%
C) 76% D) 75%
 
Answer & Explanation Answer: D) 75%

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Q:

From a point P, the angle of elevation of a tower is such that its tangent is 3/4. On walking 560 metres towards the tower the tangent of the angle of elevation of the tower becomes 4/3. What is the height (in metres) of the tower?

A) 720 B) 960
C) 840 D) 1030
 
Answer & Explanation Answer: B) 960

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Filed Under: Height and Distance
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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:

If (1 + cot2A) = x, then the value of x is

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

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