SOLUTION: A fair coin is tossed until a head appears.The probability that 3 throws are necessary.
I considered 1/2*1/2*1/2=1/8
But the answer is 1/2*1/2 only=1/4.
Please suggest.
Algebra ->
Probability-and-statistics
-> SOLUTION: A fair coin is tossed until a head appears.The probability that 3 throws are necessary.
I considered 1/2*1/2*1/2=1/8
But the answer is 1/2*1/2 only=1/4.
Please suggest.
Log On
Question 674253: A fair coin is tossed until a head appears.The probability that 3 throws are necessary.
I considered 1/2*1/2*1/2=1/8
But the answer is 1/2*1/2 DISABLED_event_only= 1/4.
Please suggest. Answer by ewatrrr(24785) (Show Source):
