Quantitative Aptitude - Arithmetic Ability Questions

Q:

Simplify : 5x - 2x(x-1)

 

A) 3x-2 B) 3x+2
C) 7x+2x2 D) 7x-2x2
 
Answer & Explanation Answer: D) 7x-2x2

Explanation:
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Q:

Find the odd one out of the series ?

35, 48, 54, 63, 81, 105

A) 63 B) 48
C) 35 D) 81
 
Answer & Explanation Answer: C) 35

Explanation:

48, 54, 63, 81 and 105 are divisible by 3 but not 35.

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Q:

If z = 6 - 2√3, then find the value of (z - 1z)2.

 

A) 102 - 4634 B) 102 - 4632
C) 102 - 46324 D) 12 - 46324
 
Answer & Explanation Answer: C) 102 - 46324

Explanation:
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Q:

What is the area of this trapezoidal garden? (All measurements are in cm)

 

A) 60 sq.cm B) 180 sq.cm
C) 210 sq.cm D) 240 sq.cm
 
Answer & Explanation Answer: D) 240 sq.cm

Explanation:
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Filed Under: Area
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Q:

What is the place value of 6 in 64?

A) 6 B) 60
C) 64 D) 10
 
Answer & Explanation Answer: B) 60

Explanation:

We know that,

● Each digit has a fixed position called its place.

● Each digit has a value depending on its place called the place value of the digit.

● The face value of a digit for any place in the given number is the value of the digit itself

● Place value of a digit = (face value of the digit) × (value of the place).

 

Hence, the place value of 6 in 64 = 6 x 10 = 60.

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226 54009
Q:

Find the odd man out of the following number sequence?

100, 101, 97, 105, 90

A) 90 B) 105
C) 97 D) 101
 
Answer & Explanation Answer: B) 105

Explanation:

The given number series 100, 101, 97, 105, 90

100

100 + 1^2 = 101

101 - 2^2 = 97

97 + 3^2 = 106 ( not 105)

106 - 4^2 = 90

 

Hence, the odd man in the given series is 105.

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Q:

A right triangle with sides 3 cm, 4 cm and 5 cm is rotated the side of 3 cm to form a cone. The volume of the cone so formed is:

A) 12 pi cub.cm B) 15 pi cub.cm
C) 16 pi cub.cm D) 20 pi cub.cm
 
Answer & Explanation Answer: A) 12 pi cub.cm

Explanation:

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105 53916
Q:

If books bought at prices ranging from Rs. 200 to Rs. 350 are sold at prices ranging from Rs. 300 to Rs. 425, what is the greatest possible profit that might be made in selling eight books ?

A) 600 B) 1200
C) 1800 D) none of these
 
Answer & Explanation Answer: C) 1800

Explanation:

Least Cost Price = Rs. (200 * 8) = Rs. 1600.

Greatest Selling Price = Rs. (425 * 8) = Rs. 3400.

Required profit = Rs. (3400 - 1600) = Rs. 1800.

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Filed Under: Profit and Loss

414 53853