6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

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

A) 165	B) 792
C) 852	D) 671

Answer & Explanation Answer: C) 852

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Q:

Find out the odd word/letters/number/number pair from the given alternatives.

A) 4267	B) 2498
C) 2739	D) 5496

Answer & Explanation Answer: B) 2498

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Q:

A boat travels 24 km upstream in 6 h and 20 km downstream in 4 h. then, the speed of a boat in still water and the speed of current are respectively

A) 4.5 km/h and 3 km/h	B) 4.5 km/h and 0.5 km/h
C) 4 km/h and 2 km/h 5 km/h and 2 km/h	D) 5 km/h and 2 km/h

Answer & Explanation Answer: B) 4.5 km/h and 0.5 km/h

Explanation:

Distance travelled by boat in upstream=24km

Time taken = 6 h

Speed of the boat in upstream = 24/6 = 4 km/h

And distance travelled by boat in downstream = 20 km

Time taken = 4h Speed of the boat in downstream = 20/4 km/h = 5 km/h

Now, speed of the boat in still water = 1/2 [ speed of the boat in upstream + speed of the boat in downstream] =1/2 [4 + 5] = 1/2 × 9 = 4.5 km/h

And speed of the current = 1⁄2 [speed of the boat in downstream – speed of the boat in upstream] = 1/2 [5 – 4] = 1/2 × 1 = 0.5 km/h

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Q:

If one-third of a number is 45, then what will be the 45% of that number?

A) 60.75	B) 58.25
C) 61.25	D) 70.75

Answer & Explanation Answer: A) 60.75

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Filed Under: Percentage
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Q:

The mean deviation of the data 3, 10, 10, 4, 7, 10, 5 is :

A) 49/7	B) 19/7
C) 50/7	D) 18/7

Answer & Explanation Answer: D) 18/7

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Filed Under: Average
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Q:

Each member of a club contributes as much rupees and as much paise as the number of members of the club. If the total contribution is Rs. 2525, then the number of members of the club is

A) 60	B) 45
C) 55	D) 50

Answer & Explanation Answer: D) 50

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Q:

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

A) B	B) N
C) P	D) W

Answer & Explanation Answer: D) W

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Q:

If $\frac{a}{1 - 2 a} + \frac{b}{1 - 2 b} + \frac{c}{1 - 2 c} = \frac{1}{2}, then \frac{1}{1 - 2 a} + \frac{1}{1 - 2 b} + \frac{1}{1 - 2 c}$ value is

A) 1	B) 2
C) 3	D) 4

Quantitative Aptitude - Arithmetic Ability Questions

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