In order to get at least once a head with probability \[\ge 0.9,\] the number of times a coin needs to be tossed is [Roorkee 1989]

In order to get at least once a head with probability \[\ge 0.9,\] the

1.	In order to get at least once a head with probability \[\ge 0.9,\] the number of times a coin needs to be tossed is [Roorkee 1989]
A.	3
B.	4
C.	5
D.	None of these
Answer» C. 5

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In order to get at least once a head with probability \[\ge 0.9,\] the number of times a coin needs to be tossed is [Roorkee 1989]

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