6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If a merchant offers a discount of 10% on the list price, then she makes a loss of 25%. What % profit or % loss will she make if she sells at a discount of 20% of the list price?

A) 5 percent profit	B) 33.33 percent loss
C) 90 percent profit	D) 20 percent profit

Answer & Explanation Answer: B) 33.33 percent loss

Explanation:

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Filed Under: Profit and Loss
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Q:

How many pairs (A, B) are possible in the number 479865AB if the number is divisible by 9 and it is given that the last digit of the number is odd?

A) 5	B) 6
C) 9	D) 11

Answer & Explanation Answer: A) 5

Explanation:

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Filed Under: Numbers
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Q:

Tan 45° + Cosec 60° =

A) (1 + 2√2)/2	B) (√3 + 2)/√6
C) 5/√3	D) (3 + 2√3)/3

Answer & Explanation Answer: D) (3 + 2√3)/3

Explanation:

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Filed Under: Simplification
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Q:

The interest earned on Rs. 1600 at the rate of 5% S>I per annum for 6 yrs would be:

A) 2080	B) 450
C) 496	D) 480

Answer & Explanation Answer: D) 480

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Filed Under: Simple Interest
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Q:

What is the value of $\frac{[\{4 \cos (90 - A) \sin^{3} (90 + A)\} - \{4 \sin (90 + A) \cos^{3} (90 - A)\}]}{\cos (\frac{180 + 8 A}{2})}$ ?

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

Answer & Explanation Answer: B) -1

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Q:

Each question contains Quantity I and Quantity II. Read the contents carefully and answer your questions accordingly.

Quantity I: there are three numbers in the ratio 5:6:10. The sum of the largest and the smallest numbers is 126 more than the other number. Find the largest number?

Quantity II: 12% of first number is equal to 25 % second number. The difference of these two numbers is 78. Then find the largest number?

A) Quantity I > Quantity I	B) Quantity I ≥ Quantity II
C) Quantity I < Quantity II	D) Quantity I < Quantity II

Answer & Explanation Answer: C) Quantity I < Quantity II

Explanation:

Quantity I= Let the three numbers will be 5x, 6x and 10x respectively

ATQ

10x+5x−6x=126

9x=126 X=14

So largest number =10x=10×14=140

Quantity II=let x and y are two numbers

ATQ

12% of x=25%of y And their difference is 78

So first no.=150 2nd no.=72

Hence Quantity I < Quantity II

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Filed Under: Ratios and Proportions

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Q:

Rajesh sells a machine for Rs 57 lakhs at a loss. Had he sold it for Rs 67 lakh, his gain would have been 7 times the former loss. Find the cost price of the machine.

A) Rs 58.25 lakhs	B) Rs 65.75 lakhs
C) Rs 75.14 lakhs	D) Rs 50.75 lakhs

Answer & Explanation Answer: A) Rs 58.25 lakhs

Explanation:

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Filed Under: Profit and Loss
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Q:

If a watch is being sold at Rs 7,225 which is marked at Rs 8,500, then what is the discount (in %) at which the watch is being sold?

A) 24	B) 15
C) 25	D) 20

Quantitative Aptitude - Arithmetic Ability Questions

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