Exams Questions and Answers

Q:

Which of the following numbers is irrational?

A) 643	B) √64
C) 646	D) 644

Answer & Explanation Answer: D) 644

Explanation:

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

3 16103

Q:

What is the greatest of 3 consecutive integers whose sum is 24 ?

A) 6	B) 7
C) 8	D) 9

Answer & Explanation Answer: D) 9

Explanation:

The sum of three consecutive integers can be written as n + (n + 1) + (n + 2) = 3n + 3

If the sum is 24, we need to solve the equation 3n + 3 = 24;

=> 3n = 21;

=> n = 7

The greatest of the three numbers is therefore 7 + 2 = 9

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Filed Under: Numbers
Exam Prep: GRE

33 16100

Q:

The variance of a set of data is 196. Then the standard deviation of the data is

A) +-14	B) 14
C) 96	D) 98

Answer & Explanation Answer: B) 14

Explanation:

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Filed Under: Probability
Exam Prep: Bank Exams

1 16090

Q:

A milkman claims to sell milk at its cost price, still, he is making a profit of 30% since he has mixed some amount of water in the milk. What is the % of milk in the mixture?

A) 71.02%	B) 76.92%
C) 63.22%	D) 86.42%

Answer & Explanation Answer: B) 76.92%

Explanation:

Let the milk he bought is 1000 ml

Let C.P of 1000 ml is Rs. 100

Here let he is mixing K ml of water

He is getting 30% profit

=> Now, the selling price is also Rs. 100 for 1000 ml

=> 100 : K%

= 100 : 30

10 : 3 is ratio of milk to water

=> Percentage of milk = 10 x 100/13 = 1000/13 = 76.92%

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Filed Under: Alligation or Mixture
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

26 16086

Q:

If the rate increases by 2%, the simple interest received on a sum of money increases by Rs. 108. If the time period is increased by 2 years, the simple interest on the same sum increases by Rs.180. The sum is ?

A) Rs. 540	B) Rs. 415
C) Rs. 404	D) Data is not sufficient

Answer & Explanation Answer: D) Data is not sufficient

Explanation:

Let the sum be Rs. p, rate be R% p.a. and time be T years.

Then,

$(\frac{P \times T \times (R + 2)}{100}) - (\frac{P \times T \times R}{100}) = 108 \Rightarrow 2 P T = 10800 . . . . . . (1)$

And,

$(\frac{P \times R \times (T + 2)}{100}) - (\frac{P \times R \times T}{100}) = 180 \Rightarrow 2 P R = 18000 . . . . . . (2)$

Clearly, from (1) and (2), we cannot find the value of p
So, the data is not sufficient.

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Filed Under: Simple Interest
Exam Prep: GRE , GATE , CAT , Bank Exams
Job Role: Bank PO , Bank Clerk

11 16078

Q:

In the following question, select the odd word from the given alternatives.

A) Area	B) Cube
C) Volume	D) Perimeter

Answer & Explanation Answer: B) Cube

Explanation:

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Filed Under: Arithmetical Reasoning
Exam Prep: Bank Exams

3 16074

Q:

Insert the missing character marked as '?'.

%MCEPASTEBIN%

A) 19	B) 17
C) 16	D) 15

Answer & Explanation Answer: C) 16

Explanation:

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Filed Under: Arithmetical Reasoning
Exam Prep: Bank Exams

0 16074

Q:

Which of the following diagrams correctly represents elephants, wolves, animals?

None

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

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