JEE Main 2009 Mathematics question
One ticket is selected at random from 50 tickets numbered 00, 01, 02, ..., 49. 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
Answer: (1)
Solution
Product of digits zero: tickets 00–09 (10) and 10, 20, 30, 40 (4) — 14 tickets. Among
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