One ticket is selected at random from 100 tickets numbered 00, 01, 02....., 99. Suppose X and Y are the sum and product of the digit found on the ticket P(Y=0X=7) is given by
A
23
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B
14
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C
150
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D
319
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Solution
The correct option is B14 X=7 can be done in the following ways: 07,16,25,34,43,52,61,70 i.e. 8 ways. Of these, Y=0 is possible when the number is 07 or 70 i.e. 2 ways. Probability = 28=14