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Five coins are tossed once. What is the probability of getting at most four tails?

Options

  1. A31 32
  2. B15 16
  3. C29 32
  4. D7 8

Correct answer

A. 31 32

Step-by-step solution

aligned & n=5 & P=P(T)= 1 2 , q=1- 1 2 = 1 2 & P(x 4)=1-P(x=5) & =1- ( 1 2 )^5=1- 1 32 = 31 32 aligned

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