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One is asked to say a two digit number. what is the probability.a. Both digits being different b. The first digit being largerc. The first digit being smaller. |
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Answer» There are 90 TWO DIGIT numbers(99–9). Out of this there are 6 numbers divisible by 15(15, 30, 45, 60, 75, 90), which are also divisible by 5. Therefore, the favorable CASES are 30–6=24. Hence, the REQUIRED probability is 24/90 = 4/15.
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