Probability Model Questions Set 1 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 1

Two packs of cards are thoroughly mixed and shuffled and two cards are drawn at random, one after the other. What is the probability that both of them are jacks?

a) $2/13$

b) $1/169$

c) $1/13$

d) $7/1339$

e) $1/179$

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Question : 2

A basket contains three blue and four red balls. If three balls are drawn at random from the basket, what is the probability that all the three are either blue or red ?

a) $1/7$

b) $3/28$

c) 1

d) $3/14$

e) None of these

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Question : 3

In a box carrying one dozen of oranges, one-third have become bad. If 3 oranges are taken out from the box at random, what is the probability that at least one orange out of the three oranges picked up is good?

a) $54/55$

b) $3/55$

c) $1/55$

d) $45/55$

e) None of these

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Question : 4

Directions :
Study the given information carefully and answer the questions that follow.

A basket contains 4 red, 5 blue and 3 green marbles.

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If two marbles are drawn at random, what is the probability that both are red ?

a) $1/2$

b) $1/6$

c) $3/7$

d) $2/11$

e) None of these

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Question : 5

A dice is thrown. What is the probability that the number shown on the dice is not divisible by 3?

a) $2/3$

b) $2/5$

c) $1/3$

d) $1/4$

e) None of these

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