At least number of times a fair coin must be tossed so that the probability of getting at least one head is at least 0.8, is

At least number of times a fair coin must be tossed so that the probab

1.	At least number of times a fair coin must be tossed so that the probability of getting at least one head is at least 0.8, is
A.	7
B.	6
C.	5
D.	None of these
Answer» E.

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At least number of times a fair coin must be tossed so that the probability of getting at least one head is at least 0.8, is

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