Quantitative Aptitude - Arithmetic Ability Questions

Q:

If the roots of the equation a(b  c)x2 + b(c  a)x + c(a  b) = 0 are equal, then which of the following is true?

A) b = ( a + c)/ ac B) 2/ b = (1/ a) + (1/ c)
C) 2 b = (1/ a) + (1/ c) D) abc = ab + bc + ca
 
Answer & Explanation Answer: B) 2/ b = (1/ a) + (1/ c)

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Q:

If 2x- 3(4-2x) < 4x - 5 < 4x + 2x/3, then x can take which of the following values?

A) 2 B) 8
C) 0 D) -8
 
Answer & Explanation Answer: C) 0

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Q:

Rearrange the jumbled up letters in their natural sequence and find the odd one out.

A) UTNA B) EINEC
C) OMEHRT D) ROBEHRT
 
Answer & Explanation Answer: D) ROBEHRT

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Filed Under: Odd Man Out
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Q:

Find the least number which must be subtracted from 18265 to make it a perfect square

A) 30 B) 38
C) 40 D) 45
 
Answer & Explanation Answer: C) 40

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Filed Under: Problems on Numbers
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Q:

The reciprocal of the sum of the reciprocals of 3/8 and 8/11 is:

A) 97/24 B) 24/97
C) 88/97 D) 97/88
 
Answer & Explanation Answer: B) 24/97

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Q:

The ratio of present ages of Ranjini and Shahid is 5:4. After 13 years the ratio of their ages will be 6:5. What is Ranjini's present age?

A) 52 B) 65
C) 60 D) 32
 
Answer & Explanation Answer: B) 65

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Filed Under: Problems on Ages
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Q:

The sum of the ages of husband and wife at present is 60. Four years ago the ratio of their ages was 7:6. What is the age of the husband?

A) 28 years B) 32 years
C) 42 years D) 38 years
 
Answer & Explanation Answer: B) 32 years

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Q:

In a cricket match, the scores of the players are considered such that coefficient of variation of scores is 16 and mean is 25 then the variance is

 

A) 12 B) 8
C) 16 D) 4
 
Answer & Explanation Answer: C) 16

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Filed Under: Average
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