A box of oranges is inspected by examining three randomly select

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsShort Answer Type

Advertisement

841.

A box of oranges is inspected by examining three randomly selected oranges drawn without replacement. If all the three oranges are good, the box is approved for sale, otherwise, it is rejected. Find the probability that a box containing 15 oranges out of which 12 are good and 3 are bad ones will be approved for sale.


Number of good oranges = 12
Number of bad oranges = 3
∴  total number of oranges = 12 + 3 = 15
Required probability = P(3 good oranges taken without replacement)
equals space 12 over 15 cross times 11 over 14 cross times 10 over 13 space equals 44 over 91

86 Views

Advertisement
842.

Two balls are drawn at random with replacement from a box containing 10 black and 8 red balls. Find the probability that both balls are red.

98 Views

843.

Two balls are drawn at random with replacement from a box containing 10 black and 8 red balls. Find the probability that first ball is black and second is red. 

86 Views

844.

Two balls are drawn at random with replacement from a box containing 10 black and 8 red balls. Find the probability that one of them is black and other is red. 

88 Views

Advertisement
845. An urn contains 7 red and 4 blue balls. Two balls are drawn at random with replacement. Find the probability of getting 2 red balls.
83 Views

846. An urn contains 7 red and 4 blue balls. Two balls are drawn at random with replacement. Find the probability of getting 2 blue balls.
126 Views

847. An urn contains 7 red and 4 blue balls. Two balls are drawn at random with replacement. Find the probability of getting one red and one blue ball.
91 Views

848.

An urn contains  4 red and 7 blue balls. Two balls are drawn at random with replacement. Find the probability of getting 2 red balls.

94 Views

Advertisement
849.

An urn contains  4 red and 7 blue balls. Two balls are drawn at random with replacement. Find the probability of getting 2 blue balls.

110 Views

850.

An urn contains  4 red and 7 blue balls. Two balls are drawn at random with replacement. Find the probability of getting one red and one blue ball.

87 Views

Advertisement