6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

The mode of the data -3, 4, 0, 4, -2, -5, 1, 7, 10, 5 is

A) 0	B) 4
C) -2	D) 7

Answer & Explanation Answer: B) 4

Explanation:

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0 777

Q:

Given that tan(θ + 15°) = √3. Then the value of θ is?

A) 15°	B) 75°
C) 45°	D) 65°

Answer & Explanation Answer: C) 45°

Explanation:

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0 710

Q:

A bag contains 25 paise, 50 paise and 1 Rs coins. There are 220 coinsinall and the total amount in the bag is Rs. 160. If there arethrice as many 1 Rs. coins as there are 25 paise coins, then what is the number of 50 paise coins?

A) 60	B) 40
C) 120	D) 80

Answer & Explanation Answer: A) 60

Explanation:

Let there be x one rupee coin, y 50 paise coin, z 25 paise coinx + y + z = 220......(i)

Total amount = 160

Now, x + (y/2) + z = 160 ......(ii)

⇒4x + 2y + z = 640

Thrice as many 1 re coin as 25 paise

⇒x = 3z ......(iii)

On solving equation (i), (ii) and (iii), we get

z = 40x= 3* 40 = 120y = 220 –(120 + 40 ) = 60

So, 50 paise coin =60

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0 1701

Q:

Simplify : $\frac{69 X 69 X 69 - 65 X 65 X 6}{69 X 69 + 69 X 65 + 65 X 65}$

A) 1	B) 4
C) 0.216	D) 0.164

Answer & Explanation Answer: B) 4

Explanation:

69 –65 = 4

69

–

65 = 4

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0 1371

Q:

If $\frac{a + b}{\sqrt{ab}} = \frac{2}{1}$ , then the value of (a-b) is

A) 1	B) 0
C) -1	D) 2

Answer & Explanation Answer: B) 0

Explanation:

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0 780

Q:

If x = 1 + √2 + √3, then the value of $x^{2} - 2 x - 4 = 0$

A) √6	B) 2√3
C) 3√2	D) 2√6

Answer & Explanation Answer: D) 2√6

Explanation:

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0 784

Q:

If ${(2 x - y)}^{2} + {(3 y - 2 z)}^{2} = 0,$ then the ratio of x:y:z is

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

Answer & Explanation Answer: B) 1 : 2 : 3

Explanation:

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0 1383

Q:

If ${(4 a - 3)}^{2} = 0,$ then the value of $64 a^{3} + 12 a + 13$ is

A) 0	B) 11
C) 22	D) 33

Quantitative Aptitude - Arithmetic Ability Questions

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