What is the probability that 3 heads are obtained

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A coin with the probability of heads being 0.8 is tossed 4 times.

(a) What is the probability that the coin shows "tails" all the four times?
(b) What is the probability that 3 heads are obtained?
(c) What is the probability that at least 2 consecutive heads are obtained?

 

Reference no: EM13328418

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