6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

What is the value of tan 6° tan 36° tan 84° tan 54° tan 45°?

A) 1/2	B) 1/√2
C) 1	D) 1/3

Answer & Explanation Answer: C) 1

Explanation:

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Filed Under: Simplification
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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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Filed Under: Numbers
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Q:

The circumferences of two circles are touching externally. The distance between their centres is 12 cm. The radius of one circle is 7 cm. Find the diameter(in cm) of the other circle.

A) 12	B) 10
C) 8	D) 5

Answer & Explanation Answer: B) 10

Explanation:

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Filed Under: Area
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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

Answer & Explanation Answer: D) 4

Explanation:

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Q:

An article was sold for Rs. 2,400 at a discount of 20%. Find the selling price, if the discount was 25%.

A) Rs. 2250	B) Rs. 2000
C) Rs. 1800	D) Rs. 2150

Answer & Explanation Answer: A) Rs. 2250

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

If x = (√2 + 1)/(√2 – 1), then what is the value of $(x^{5} + x^{4} + x^{2} + x) / x^{3}$ ?

A) 5	B) 2
C) 2√3	D) 2√2

Answer & Explanation Answer: C) 2√3

Explanation:

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Q:

Average of the height of 251 students of a school is 48. If the average of the height of the boys is 51 and the average of the height of the girls is 29, then what will be the ratio of the total height of boys and the total height of girls respectively?

A) 323 : 29	B) 31 : 441
C) 29 : 323	D) 441 : 23

Answer & Explanation Answer: A) 323 : 29

Explanation:

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

Choose the word is least like the other words in the group

A) Canoe	B) Dingy
C) Yatch	D) Igloo

Quantitative Aptitude - Arithmetic Ability Questions

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