A bottle is full of dettol. One-third of it is tak | Quantitative Aptitude - Arithmetic Ability Questions & Answers

Q:

The average of five consecutive even numbers is 40. What is the value of smallest of these numbers?

A) 35	B) 36
C) 44	D) 48

Answer & Explanation Answer: B) 36

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Q:

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

A) 81	B) 125
C) 64	D) 198

Answer & Explanation Answer: D) 198

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Q:

Expand and simplify ${(2 x + 5)}^{2} * (4 x - 1) - (3 x^{3} - 16 x^{2} + 25 x - 21)$

A) 13x3 + 92x2 - 55x + 4	B) 13x3 - 92x2 - 55x - 4
C) 13x3 + 92x2 + 55x - 4	D) 13x3 - 92x2 + 55x + 4

Answer & Explanation Answer: C) 13x3 + 92x2 + 55x - 4

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Q:

A cone is hollowed out of a solid wooden cube of side 7 cm. The diameter and height of the cone is same as the side of the cube. What is the volume of the remaining cube?

A) 253.17 cubic cms	B) 228.84 cubic cms
C) 143.26 cubic cms	D) 257.68 cubic cms

Answer & Explanation Answer: A) 253.17 cubic cms

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Q:

Reflection of the point (2,-4) in the origin is

A) (2,4)	B) (-2,-4)
C) (2,-4)	D) (-2,4)

Answer & Explanation Answer: D) (-2,4)

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Q:

By increasing the price of entry ticket to a fair in the ratio 5:7, the number of visitors to the fair has decreased in the ratio 11:9. In what ratio has the total collection increased or decreased?

A) increased in the ratio 55:63	B) decreased in the ratio 63:55
C) increased in the ratio 45:77	D) decreased in the ratio 77:45

Answer & Explanation Answer: A) increased in the ratio 55:63

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Q:

Asif is twice as good as workman as Bashir and together they finish a piece of work in 30 days. In how many days will Asif alone finish the work?

A) 90	B) 45
C) 60	D) 75

Answer & Explanation Answer: B) 45

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Q:

What smallest number should be added to 2401 so that the sum is completely divisible by 14 ?

A) 8	B) 7
C) 4	D) 5

A) 13 : 55	B) 20 : 74
C) 16 : 65	D) 10 : 48

A bottle is full of dettol. One-third of it is taken out and then an equal amount of water is poured into the bottle to fill it. This operation is done four times. Find the final ratio of dettol and water in the bottle.

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