Question

10.A coin is tossed three times. Then the probability that at least one tail occurs is *


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Answer 1

Answer:

the total sample.piece we can get is 8

Step-by-step explanation:

atleast tail means we can get either one and more than 1

by this probability is 7/8

Answer 2

Answer:

S={HHH, HHT, HTH, THH, TTH, THT, HTT, TTT}

n(S)=8

Let A be the event of getting atleast one tail

A={HHT, HTH, THH, TTH, THT,HTT, TTT}

n(A)= 7

P(A)=n(S)/n(A)

=7/8