Chapter 8.2, Problem 58STP

To determine

To calculate: The probability of selecting a red or a yellow block.

Answer to Problem 58STP

The probability of selecting a red or a yellow block is $\frac{1}{2}$ .

Explanation of Solution

Given information:

The given number of blocks is $10$ .

The number of red block is $2$

The number of yellow block is $3$

Given information:

  $P=\frac{probableoutcomes}{totaloutcomes}$

Calculation:

Consider given number of blocks as $10$ .

Add the number of red and yellow blocks to calculate the probable outcomes.

  $\begin{array}{c}probableoutcomes=2+5\\ =5\end{array}$

Substitute $5$ for probable outcomes and $10$ for total outcomes.

  $\begin{array}{c}P=\frac{5}{10}\\ =\frac{1}{2}\end{array}$

Hence, the probability of selecting a red or a yellow block is $\frac{1}{2}$ .