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free Online Test Probability Questions and Answers Quiz 2

Description: Free Online Test questions and answers on Probability with explanation for various competitive exams,entrance test. Solved examples with detailed answer test 2

Exercise

"Life is like riding a bicycle. To keep your balance you must keep moving."
- Albert Einstein
1 . Direction : Study the given information carefully and answer the questions that follow :

An urn contains 3 red, 6 blue, 2 greenand 4 yellow marbales.

$Q.$ If two marbles are picked at random, what is the probability that both are green ?
A.  $2\over15$ B.    $1\over15$
C.  $2\over7$ D.    None of these
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2 . In a container there are 28 eggs out of which 8 eggs are rotten. If two eggs are chosen at random, what will be the probability that atleast one egg is rotten ?
A.  $94\over 189$ B.    $95\over 187$
C.  $93\over 189$ D.    None of these
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3 . An urn contains 3 red and 4 green marbles. If three marbles are picked at random,what is the probabilitly that two are green and one is red ?
A.  $3\over 7$ B.    $18\over 35$
C.  $5\over 14$ D.    $4\over 21$
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4 . A bag contains 2 red, 3 green and 2 blue balls, 2 balls are to be drawn randomly, What is the probability that the balls drawn contain no blue ball ?
A.  $5\over 7$ B.    $10\over 21$
C.  $2\over 7$ D.    None of these
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5 . 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 of red ?
A.  1 B.    $1\over 7$
C.  $3\over 14$ D.    $3\over 28$
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6 . An urn containing 9 red, 7 white and 4 black balls. If two balls are drawn at random. find the probability that both the balls are red.
A.  $17\over 95$ B.    $18\over 95$
C.  $1\over 12$ D.    $91\over 190$
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7 . Out of 5 girls and 3 boys, 4 children are to be randomly selected for a quiz contest. What is the probability that all girls ?
A.  $1\over 14$ B.    $1\over 7$
C.  $5\over 17$ D.    $2\over 17$
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8 . If four marbles are drawn at random, what is the probability that two are blue and two are red ?
A.  $10\over 1001$ B.    $7\over 17$
C.  $15\over 384$ D.    $3\over 5$
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