Exams Questions and Answers

Q:

A letter is takenout at random from 'ASSISTANT' and another is taken out from 'STATISTICS'. The probability that they are the same letter is :

A) 35/96	B) 19/90
C) 19/96	D) None of these

Answer & Explanation Answer: B) 19/90

Explanation:

$A S S I S T A N T \to A A I N S S S T T$

$S T A T I S T I C S \to A C I I S S S T T T$

Here N and C are not common and same letters can be A, I, S, T. Therefore

Probability of choosing A = $\frac{2_{C_{1}}}{9_{C_{1}}} \times \frac{1_{C_{1}}}{10_{C_{1}}}$ = 1/45

Probability of choosing I = $\frac{1}{9_{C_{1}}} \times \frac{2_{C_{1}}}{10_{C_{1}}}$ = 1/45

Probability of choosing S = $\frac{3_{C_{1}}}{9_{C_{1}}} \times \frac{3_{C_{1}}}{10_{C_{1}}}$ = 1/10

Probability of choosing T = $\frac{2_{C_{1}}}{9_{C_{1}}} \times \frac{3_{C_{1}}}{10_{C_{1}}}$ = 1/15

Hence, Required probability = $\frac{1}{45} + \frac{1}{45} + \frac{1}{10} + \frac{1}{15} = \frac{19}{90}$

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Filed Under: Probability
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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97 22050

Q:

Eye : Myopia :: Teeth : ?

A) Cataract	B) Trachoma
C) Eczema	D) Pyorrhea

Answer & Explanation Answer: D) Pyorrhea

Explanation:

The second word is a disease of the first word.

That is here Myopia is the disease of the eyes. Similarly, Pyorrhea is the disease of the teeth.

Hence, Eye : Myopia :: Teeth : Pyorrhea.

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Filed Under: Analogy
Exam Prep: GRE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

41 22047

Q:

Select the related word/letters/number from the given alternatives.

Flow:River::Stagnant:?

A) Pond	B) Rain
C) Stream	D) Canal

Answer & Explanation Answer: A) Pond

Explanation:

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Filed Under: Analogy
Exam Prep: Bank Exams

0 22040

Q:

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

(A) ECBY (B) RTUX (C ) GEDA (D) WUTQ

A) A	B) B
C) C	D) D

Answer & Explanation Answer: B) B

Explanation:

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

0 22032

Q:

In what time will Rs. 1000 become Rs. 1331 at 10% per annum compounded annually?

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

Answer & Explanation Answer: C) 3years

Explanation:

Principal = Rs. 1000; Amount = Rs. 1331; Rate = 10% p.a. Let the time be n years. Then,
[ 1000 (1+ (10/100))^n ] = 1331 or (11/10)^n = (1331/1000) = (11/10)^3
n = 3 years

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Filed Under: Compound Interest
Exam Prep: Bank Exams
Job Role: Bank PO

39 22026

Q:

Which of the following has highest penetration power?

A) α– radiations	B) β– radiations
C) γ– radiations	D) All have same penetration power.

Answer & Explanation Answer: C) γ– radiations

Explanation:

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Filed Under: Physics
Exam Prep: Bank Exams

1 22020

Q:

The concept of biosphere reserve was evolved by

A) IUCN	B) UNESCO
C) Zoological Survey of India	D) Government of India

Answer & Explanation Answer: B) UNESCO

Explanation:

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Filed Under: General Science
Exam Prep: Bank Exams

1 22019

Q:

In a class of 78 students 41 are taking French, 22 are taking German. Of the students taking French or German, 9 are taking both courses. How many students are not enrolled in either course?

A) 6	B) 12
C) 24	D) 18

Answer & Explanation Answer: C) 24

Explanation:

You could solve this by drawing a Venn diagram. A simpler way is to realize that you can subtract the number of students taking both languages from the numbers taking French to find the number taking only French. Likewise find those taking only German. Then we have:Total = only French + only German + both + neither

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