CBSE Class 9 Answered
TWO DICE ARE THOWN AT SAME AND THE PRODUCT OF NUJMBERS APPERING ON THEM IS NOTED .FIND THE PROBABILITY THAT THE PRODUCT IS LESS THAT 9.
Asked by M.s.srinidhi21 | 30 Dec, 2014, 12:02: PM
Expert Answer
Two dice are thrown and hence the sample space is:
S={(1,1), (1,2), (1,3), (1,4), (1,5), (1,6),
(2,1), (2,2), (2,3), (2,4), (2,5), (2,6),
(3,1), (3,2), (3,3), (3,4), (3,5), (3,6),
(4,1), (4,2), (4,3), (4,4), (4,5), (4,6),
(5,1), (5,2), (5,3), (5,4), (5,5), (5,6),
(6,1), (6,2), (6,3), (6,4), (6,5), (6,6)}
total no. in the sample space = 36
We need to find the probability of numbers such that the product of the above pair should be less tahn 9.
Pairs with product less than 9
={(1,1), (1,2), (1,3), (1,4), (1,5), (1,6),
(2,1), (2,2), (2,3), (2,4),
(3,1), (3,2), (3,3),
(4,1), (4,2),
(5,1),
(6,1)}
No. of favrouable events = 17
Answered by Vimala Ramamurthy | 31 Dec, 2014, 09:08: AM
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