Quantitative Aptitude - Arithmetic Ability Questions

Q:

The perimeter of a triangle is 28 cm. If the length is 5/2 times its breadth, find the length and breadth of the triangle.

A) 9 & 5 B) 10 & 4
C) 6 & 7 D) 11 & 3
 
Answer & Explanation Answer: B) 10 & 4

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Q:

If x1x2x3 = 4(4 + x1 + x2 + x3 ), then what is the value of [1/(2 + x1  )] + [1/(2 + x2 )] + [1/(2 + x3 )]?

A) 1 B) 1/2
C) 2 D) 1/3
 
Answer & Explanation Answer: B) 1/2

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Q:

Simplify 576b3x2a4z3/36a3b2z

A) 16bx2az2 B) 8bx2az2
C) 32ba2 z D) 32bxa2
 
Answer & Explanation Answer: A) 16bx2az2

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Q:

Factorise x2 + 3x -­ 18

A) (x+18)(x-­1) B) (x­-1)(x+18)
C) (x+6)(x-­3) D) (x-­6)(x+3)
 
Answer & Explanation Answer: C) (x+6)(x-­3)

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Q:

If sinθ x cosθ = 1⁄2 . The value of sinθ ­- cosθ is where 0°< θ< 90°

A) 0 B) √2
C) 2 D) 1
 
Answer & Explanation Answer: A) 0

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Q:

If x tan 60° + cos 45° = sec 45° then the value of x2 + 1 is

A) 6/7 B) 7/6
C) 5/6 D) 6/5
 
Answer & Explanation Answer: B) 7/6

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Q:

10 is added to a certain number, the sum is multiplied by 7, the product is divided by 5 and 5 is subtracted from the quotient. The remainder left is half of 88. What is the number?

A) 21 B) 20
C) 25 D) 30
 
Answer & Explanation Answer: C) 25

Explanation:

Let the number be x

When 10 is added, number = x + 10

When 7 is multiplied, number = 7 X (x + 10)

According to question,

⇒[7 X (x+10) / 5] –5 = 44

⇒7x + 70 = 49 X 5

⇒x + 10 = 35,

⇒x = 25

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Q:

The difference between compound interest and simple interest on a certain sum of money for 2 years at 5% per annum is Rs. 41. What is the sum of money?

A) Rs.7200 B) Rs.9600
C) Rs.16400 D) Rs.8400
 
Answer & Explanation Answer: C) Rs.16400

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