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One ticket is selected at random from 50 tickets numbered 00, 01, 02, ….. .Then the probability that the sum of the digits on the selected ticket is 8, given that the product of these digits is zero, equals-

One ticket is selected at random from 50 tickets numbered 00, 01, 02, …..
.Then the probability that the sum of the digits on the selected ticket is 8, given that the product of these digits is zero, equals-

Grade:12

1 Answers

SHAIK AASIF AHAMED
askIITians Faculty 74 Points
9 years ago
Hello student,
If the product of the digits is zero then the ticket must be one of,
00,01,02,03,04,05,06,07,08,09,10,20,30,...
and there are 14 of these and there is only one where the sum
of the digits is 8. So the required probability
is 1/14
Thanks and Regards
Shaik Aasif
askIITians faculty

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