Question

Three coins are tossed simultaneously. What is the probability of getting exactly two heads?

Options

• `1/2`

• `1/4`

• `3/8`

• `3/4`

Answer 1

`3/8`

Explanation:

When 3 coins are tossed simultaneously, the possible outcomes are HHH, HHT, HTH, THH, THT, HTT, TTH and TTT.

Total number of possible outcomes = 8

Let E be the event of getting exactly two heads.

Then, the favourable outcomes are  HHT, THH, and HTH.

​Number of favourable outcomes = 3

∴ Probability of getting exactly 2 heads =  P(E) =`3/8`