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Q:

x, y and z are three numbers such that x is 30% of z and y is 40% of z. If x is p% of y, then what is the value of p?

A) 45	B) 55
C) 65	D) 75

Answer & Explanation Answer: D) 75

Explanation:

x = 30% of z = 30z/100 = 3z/10

y = 40% of z = 40z/100 = 4z/10

According to the question,(x/y)*100 = p%

p% = 3z/100/4z/100×100= 75%

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Filed Under: Percentage
Exam Prep: Bank Exams

Q:

For $x = \frac{4 \sqrt{6}}{\sqrt{2} + \sqrt{3}}, what is the value of \frac{x + 2 \sqrt{2}}{x - 2 \sqrt{2}} + \frac{x + 2 \sqrt{3}}{x - 2 \sqrt{3}}$

A) 1	B) √2
C) √3	D) 2

Answer & Explanation Answer: D) 2

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

Suppose n is a positive integer such that $(n^{2} + 48)$ is a perfect square. What is the number of such n?

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

Answer & Explanation Answer: C) 3

Explanation:

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams

Q:

What is the unit place digit in the expansion of $7^{73}$ ?

A) 1	B) 3
C) 7	D) 9

Answer & Explanation Answer: C) 7

Explanation:

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Filed Under: Numbers
Exam Prep: Bank Exams

Q:

In a certain town of population size 1,00,000 three types of newspapers (I, II and III) are available. The percentages of the people in the town who read these papers are as follows:

What is the number of people who do not read any of these three newspapers?

A) 62,000	B) 64,000
C) 66,000	D) 68,000

Answer & Explanation Answer: D) 68,000

Explanation:

Number of people who do not read any of these newspaper = total population – number of people who read atleast one of these newspapers.

number of people who read atleast one of these newspapers = 1% + 1% + 3% + 1% + 7% + 19% = 32% of total population = 32000

required number of people = 100000 – 32000 = 68000

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Filed Under: Table Charts
Exam Prep: Bank Exams

Q:

In a certain town of population size 1,00,000 three types of newspapers (I, II and III) are available. The percentages of the people in the town who read these papers are as follows:

What is the number of people who read at least two newspaper?

A) 12,000	B) 13,000
C) 14,000	D) 15,000

Answer & Explanation Answer: A) 12,000

Explanation:

As we can see from the above venn diagram the number of people who read two or more newspapers are

1% + 1% + 3% + 7% = 12% = 12/100 * 100000 = 12000

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Filed Under: Table Charts
Exam Prep: Bank Exams

Q:

In a certain town of population size 1,00,000 three types of newspapers (I, II and III) are available. The percentages of the people in the town who read these papers are as follows:

What is the number of people who read only one newspaper?

A) 20,000	B) 25,000
C) 30,000	D) 35,000

Answer & Explanation Answer: A) 20,000

Explanation:

The number of people who read only I , only II and only II are

1 % + 19% + 0% = 20% of total population = 20/100 *

100000 = 20000

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Filed Under: Table Charts
Exam Prep: Bank Exams

Q:

Consider the following for real numbers α, β, γ and δ ?

1) sec α = 1/4

2) tan β = 20

3) cosec γ = 1/2

4) cos δ = 2

How many of the above statements are not possible?

A) one	B) two
C) three	D) four

Answer & Explanation Answer: C) three

Explanation:

Sec of any number can never be less than 1

tan can take any value from -∞ to + ∞

cosec of any number can never be less than 1

cos of any number can never be greater than 1

so option 1,3,4 are not possible

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Filed Under: Simplification
Exam Prep: Bank Exams

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