Question

There is a box containing 10 ping pong balls of 3 different colours red, green and blue. There are 2 red balls and 3 green balls. What is the probability of getting a blue ball in the first attempt?

• A. $\frac{1}{2}$
• B. $\frac{2}{3}$
• C. $\frac{3}{4}$
• D. $\frac{5}{6}$

Answer 1

The correct option is A

$\frac{1}{2}$

Total number of Blue Balls= 10-(2+3) =5
Probability of getting Blue Balls
$=\frac{\text{Number of blue balls}}{\text{Total number of balls}}$
$=\frac{5}{10}$
$=\frac{1}{2}$