Quantitative Aptitude - Arithmetic Ability Questions

Q:

The mean of marks secured by 45 students in division A of class X is 56, 40 students of division B is 52 and that of 40 students of division C is 50. Find the mean of marks of the students of three divisions of Class X.

A) 52.1 B) 51.4
C) 52.8 D) 54.2
 
Answer & Explanation Answer: C) 52.8

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Q:

On dividing 221a2b2 by 13b2, we get _____.

A) 17a2 B) 17b2
C) 13a2b2 D) 13
 
Answer & Explanation Answer: A) 17a2

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Q:

What is the area (in sq cm) of a rectangle if its diagonal is 26 cm and one of its sides is 10 cm?

A) 120 B) 240
C) 360 D) 480
 
Answer & Explanation Answer: B) 240

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Q:

What is the value of equation a3+b3+c3-3abc if a2+b2+c2=ab+bc+ca+4 and a+b+c = 4.

A) 0 B) 1
C) 16 D) 256
 
Answer & Explanation Answer: C) 16

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Q:

For triangle ABC, what would be the equation of median AD if co-ordinates of A, B and C are (-5,4), (-4,0) and (-2,2) respectively?

A) 3x - 2y = -11 B) 3x + 2y = 7
C) 3x + 2y = -7 D) 3x - 2y = 11
 
Answer & Explanation Answer: C) 3x + 2y = -7

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Q:

Ram and Rahim standing at a distance of 680m run towards each other at a speed of 8 m/sec and 9 m/sec respectively. After how long will they meet?

A) 17 sec B) 24 sec
C) 40 sec D) 36 sec
 
Answer & Explanation Answer: C) 40 sec

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Q:

Find the number of prime factor of 1024.

A) 9 B) 10
C) 11 D) 12
 
Answer & Explanation Answer: B) 10

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Q:

What number, from the following should be deducted from 1184 to make it exactly divisible by 21?

A) 15 B) 12
C) 8 D) 7
 
Answer & Explanation Answer: C) 8

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