Question

There are 25 red balls, 42 blue balls and 33 yellow balls in a bag. Kiran mixes the balls thoroughly inside the bag and then picks a ball at random from the bag. What is the probability that Kiran picks a blue ball?

• A. 0.82
• B. 0.62
• C. 0.50
• D. 0.42

Answer 1

The correct option is D

0.42

For an event E,

$P\left(E\right)=\frac{\text{Number of favourable outcomes}}{\text{Number of all possible outcomes}}$

There are 42 blue balls in the bag. Thus, the number of favourable outcomes is 42.

Total number of balls inside bag = 25 + 42 + 33 = 100

Thus P(picking blue ball) $=\frac{42}{100}=0.42$