Quantitative Aptitude - Arithmetic Ability Questions

Q:

Average age of 5 students of a school is 14 years. The average age of students and their Mathematics and science teachers is 30 years. If the age of science teacher is 6 years more than the age of Mathematics teacher, then what is the age (in years) of Mathematics teacher?

 

 

A) 67   B) 68  
C) 56   D) 74
 
Answer & Explanation Answer: A) 67  

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Filed Under: Problems on Ages
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Q:

Find the value of p if 3x + p, x -­ 10 and ­x + 16 are in arithmetic progression.

A) 16 B) 36
C) -16 D) -36
 
Answer & Explanation Answer: D) -36

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Q:

What is the mean of first hundred natural numbers?

A) 50 B) 50.5
C) 51.5 D) 51
 
Answer & Explanation Answer: B) 50.5

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Q:

The base area of a right pyramid is 57 sq. units and height is 10 units. Then the volume of the pyramid is

A) 190 c. units B) 380 c. units
C) 540 c. units D) 570 c. units
 
Answer & Explanation Answer: A) 190 c. units

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Q:

If 2(3x ­- 4) -­ 2 < 4x ­- 2 ≥ 2x -­ 4; then the value of x is

A) 2 B) 5
C) -4 D) -5
 
Answer & Explanation Answer: A) 2

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Q:

What is the value of a2 + b2a3 - b3, when a + b = 8 and a - b = 2?

A) 0.313 B) 0.347
C) 0.368 D) 0.381
 
Answer & Explanation Answer: B) 0.347

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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:

If 1 = 2, 3 = 6, 4 = 8, and + = -, what would be the value of 41 + 34 + 13 = ?

A) -88 B) 88
C) 12 D) -12
 
Answer & Explanation Answer: D) -12

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