Question

A box contains 3 red, 4 green, and 3 yellow balls. If a ball is drawn at random, find the probability that the ball is red.A.4/10B.3/10C.6/10D.7/10

Answer 1

Solution:

Given:

$\begin{gathered} \operatorname{Re}d=3\text{balls} \\ \text{Green}=4\text{balls} \\ \text{Yellow}=3\text{balls} \\ TOTAL=10balls \end{gathered}$

To get the probability that a ball picked is red, we use the formula for probability below,

$\text{Probability}=\frac{n\text{ umber of required outcome}}{n\text{ umber of total or possible outcomes}}$

Hence,

$\begin{gathered} \text{Probability}=\frac{n\text{ umber of required outcome}}{n\text{ umber of total or possible outcomes}} \\ \text{Probability}=\frac{n\text{ umber of red balls}}{\text{ total number of balls}} \\ \text{Probability}=\frac{3}{10} \end{gathered}$

Therefore, the probability that the ball is red is;

$\frac{3}{10}$

Hence, the correct answer is OPTION B.