ProbabilityMedium
Question
In order to get at least once a head with probability ≥0.9, the minimum number of times a coin need to be tossed is-
Options
A.3
B.4
C.5
D.None of these
More Probability Questions
A man parks his car among ' $n$ ' cars standing in a row. His car not being parked at an end. On his return he finds tha...In a series of 3 independent trials the probability of exactly 2 success is 12 times as large as the probability of 3 su...A six faced die is a biased one. It is thrice more likely to show an odd number than show an even number. It is thrown t...A quadratic equation is chosen from the set of all quadratic equations which are unchanged by squaring their roots. The ...If from each of the three boxes containing 3 white and 1 black, 2 which and 2 black, 1 which and 3 black balls, one ball...