6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

What is the value of [(sin 7x – sin 5x)÷(cos 7x + cos 5x)] – [(cos 6x – cos 4x)÷(sin 6x + sin 4x)]?

A) 1	B) 2 tan x
C) tan 2 x	D) tan (3 x/2)

Answer & Explanation Answer: B) 2 tan x

Explanation:

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Filed Under: Simplification
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Q:

Shaan got a total of Rs. 912 in the denomination of equal numbers of Rs. 1, Rs. 5 and Rs. 10 coins. How many coins do Shaan posses?

A) 16	B) 57
C) 171	D) 323

Answer & Explanation Answer: C) 171

Explanation:

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Q:

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

A) 243	B) 687
C) 978	D) 456

Answer & Explanation Answer: D) 456

Explanation:

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Filed Under: Odd Man Out
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Q:

Two numbers are in the ratio 3:5. If 6 is added to both of them, the ratio becomes 2:3. The numbers are

A) 21 and 35	B) 30 and 50
C) 24 and 40	D) 18 and 30

Answer & Explanation Answer: D) 18 and 30

Explanation:

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Filed Under: Ratios and Proportions
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Q:

In a class of 56 students there are 28 girls. The average weight of these girls is 46 kg and average weight of the full class is 51 kgs. What is the average weight of the boys of the class?

A) 55	B) 56
C) 53	D) 54

Answer & Explanation Answer: B) 56

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Filed Under: Average
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Q:

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

Quantity I: 3 years ago the ratio of age of A and B is 3: 4 after 2 years the sum of their ages is 45. Then find the present age of A?

Quantity II: 5 years ago, the ratio of age of p and Q id 3: 4 P’s age after 6 years is equal to the present age of Q. the find the present age of P?

A) Quantity I > Quantity II	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 3 year ago the age of A and B be 3x and 4x respectively

Then ATQ 3x+5+4x+5=45 X=5

Hence present age of A=3x+3=18year

Quantity II== Let 5 year ago the age of p and q be 3x and 4x respectively

Then ATQ

3x+11=4x+5

X=6 Hence present age of P=3x+5=23

Hence Quantity I < Quantity II

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Filed Under: Problems on Ages

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Q:

Six year ago Parvez’s age was same as the present age of Manish. If the present age of Parvez is one-fourth more than that of Manish's present age, then in how many years will Parvez’s age become double of Manish’s present age?

A) 6	B) 12
C) 15	D) 18

Answer & Explanation Answer: D) 18

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Filed Under: Problems on Ages
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Q:

If $9^{x + 2} = 240 + 9^{x},$ the value of ${(8 x)}^{x}$ is

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

Quantitative Aptitude - Arithmetic Ability Questions

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