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An unbiased coin is tossed n times. The probability of getting at least one tail is p and the probability of at What is the value of p+q ?

Options

  1. A57 32
  2. B53 32
  3. C51 32
  4. D1

Correct answer

A. 57 32

Step-by-step solution

aligned p+q & =2-2 ( 1 2 )^n- n 2^n & =2-2 1 2^5 - 5 2^5 = 57 32 aligned

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