A fair coin is tossed 5 times. What is the probability of exactly 2 heads?

Answer and explanation

Correct answer: A.

  1. Step 1: There are equally likely sequences.
  2. Step 2: of them have 2 heads: probability .
Answer
.
Why not the others: : The number of ways to choose positions was left out. : The proportion of heads was used. : The denominator was instead of .

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A fair coin is tossed 5… | Egyptian Scholastic Test (EST)