Chapter 12.3, Problem 13PPS

To determine

To Find: The probability of given possibility.

Answer to Problem 13PPS

The probability is $\frac{3}{16}$ .

Explanation of Solution

Given information:

Total number of coins = 4.

Two are heads and at least one is tails.

Total number of coins = 4.

  $\begin{array}{l}\text{Total number of outcomes}=2*2*2*2\\ =16\end{array}$

Two are heads and at least one is tails.

Hence, possible outcomes be

  $\begin{array}{l}\left(H,H,H,T\right),\left(H,H,T,H\right),\\ \left(H,H,T,T\right)\end{array}$

Total number of possible outcomes is 3.

Hence ,

  $\text{Probability}=\frac{3}{16}$

Hence, required probability is $\frac{3}{16}$ .