Exams Questions and Answers

Q:

If 30% of 40% of X is 240, then what is the value of X?

A) 441	B) 2000
C) 1200	D) 1800

Answer & Explanation Answer: B) 2000

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

The average weight of L, M and N is 93 kg. If the average weight of L and M be 89 kg and that of M and N be 96.5 kg, then the weight (in kg) of M is ________.

A) 92	B) 86
C) 101	D) 95

Answer & Explanation Answer: A) 92

Explanation:

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Filed Under: Average
Exam Prep: Bank Exams

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Q:

A, B and C are three students. A got 18% more marks than B and 12% less than C. If B got 220 marks, then how much marks C has got?

A) 295	B) 230
C) 224	D) 245

Answer & Explanation Answer: A) 295

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

Galton’s whistle is most commonly associated with

A) Shark	B) Horses
C) Elephants	D) Dogs

Answer & Explanation Answer: D) Dogs

Explanation:

Galton's whistle is also called as Dogs whistle or silent whistle, is a type of whistle that emits sound in the ultrasonic range, which people cannot hear but some other animals can, including dogs and domestic cats, and is used in their training.

Image result for Galtonâs whistle

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Filed Under: Animals and Birds
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

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Q:

$a^{2} + b^{2} + c^{2} - ab - bc - ca = 0, iff$

A) abc = -1	B) a = b = c
C) abc = 1	D) abc = 0

Answer & Explanation Answer: B) a = b = c

Explanation:

Here given formula is

$a^{2} + b^{2} + c^{2} - ab - bc - ca = 0$

and it is possible if and only if a = b = c.

From the trial and error method,

1) Let a = b = c = 1

Now substitute these values of a, b, c in the above formula.

We get 1 + 1 + 1 - 1 - 1 - 1 = 3 - 3 = 0

2) Now, let a = b = c = 4

Now substitute these values of a, b, c in the above formula.

We get 16 + 16 + 16 - 16 - 16 - 16 = 48 - 48 = 0.

Hence, it is possible that

$a^{2} + b^{2} + c^{2} - ab - bc - ca = 0 iff a = b = c.$

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Filed Under: Arithmetical Reasoning
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

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Q:

If 5th January 2011 was a Thursday, then what day of the week was it on 1st January 2013 ?

A) Thursday	B) Wednesday
C) Tuesday	D) Monday

Answer & Explanation Answer: B) Wednesday

Explanation:

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Filed Under: Calendar
Exam Prep: Bank Exams

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Q:

Identify the diagram that best represents the relationship among the given classes.

Mathematics, Arithmetic, Algebra

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

Answer & Explanation Answer: D) 4

Explanation:

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Filed Under: Logical Venn Diagram
Exam Prep: Bank Exams

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Q:

Refer the below data table and answer the following question.

What is the ratio of biys to girls?

A) 31 : 22	B) 20 : 29
C) 29 : 20	D) 22 : 31

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