Quantitative Aptitude - Arithmetic Ability Questions

Q:

Which of the following is correct?

A) (4x + 5y)(5x - 4y) = 20x2 + 9xy - 20y2 B) (4x + 5y)(5x - 4y) = 20x2 + 41xy - 20y2
C) (4x + 5y)(5x - 4y) = 20x2 - 9xy + 20y2 D) (4x + 5y)(5x - 4y) = 20x2 - 41xy + 20y2
 
Answer & Explanation Answer: A) (4x + 5y)(5x - 4y) = 20x2 + 9xy - 20y2

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Q:

The two lines 4x+3y=0 and 7x+5y=0 will ______ in their graphical representation.

A) be parallel to each other B) intersect each other at one point only
C) intersect each other at three points only D) coincide each other
 
Answer & Explanation Answer: B) intersect each other at one point only

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Q:

If x = (a/b) + (b/a), y = (b/c) + (c/b) and z = (c/a) + (a/c), then what is the value of xyz  x2  y2  z2?

A) – 4 B) 2
C)  – 1 D) – 6
 
Answer & Explanation Answer: A) – 4

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Q:

38% of 250 is equal to

A) 95 B) 114
C) 76 D) 104.5
 
Answer & Explanation Answer: A) 95

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Filed Under: Percentage
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Q:

In the following question, select the odd letter from the given alternatives.

A) A B) S
C) U D) I
 
Answer & Explanation Answer: B) S

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Q:

The average height of A, B and C is 148 cm. If the average height of A and B is 136 cm and that of B and C is 125 cm, then what is the height (in cm) of B?

A) 56 B) 78
C) 112 D) 130
 
Answer & Explanation Answer: B) 78

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Q:

Some girls can do a piece of work in 18 days. In how much time (in days) two times the number of such girls will complete thrice of the work?

 

A) 12 B) 27
C) 21 D) 24
 
Answer & Explanation Answer: B) 27

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Filed Under: Time and Work
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Q:

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

A) BEH B) ILO
C) EGJ D) UXA
 
Answer & Explanation Answer: C) EGJ

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