Tossing a die. You are tossing a balanced die that has
Chapter , Problem 5.72(choose chapter or problem)
Tossing a die. You are tossing a balanced die that has probability 1/6 of coming up 1 on each toss. Tosses are independent. We are interested in how long we must wait to get the first 1. (a) The probability of a 1 on the first toss is 1/6. What is the probability that the first toss is not a 1 and the second toss is a 1? (b) What is the probability that the first two tosses are not 1s and the third toss is a 1? This is the probability that the first 1 occurs on the third toss. (c) Now you see the pattern. What is the probability that the first 1 occurs on the fourth toss? On the fifth toss?
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