Question

Anna tossed 3 coins in the air. What is the probability that exactly 2 of the coins show heads? Look back at all of the possible outcomes from #2 and use that to find your probability. Write the probability as a fraction. Simplify, if needed.

(Exactly means only 2 heads, no more than or no less than)

Answer 1

Explanation:

There are 8 possibilities.

HHH

HHT

HTH

HTT

THH

THT

TTH

TTT

Now just count the number with 2 heads There are 3 of them

(P 3H) = 3/8