Correct Answer - Option 3 : 3
Given:
The bag contains 15 red balls and some green balls.
The probability of drawing a green ball = 1/6
Formula used:
Probability = number of favourable outcomes/total number of possible outcomes
Calculation:
Let the total no. of balls in the bag = n
According to the question:
1/6 = (n - 15)/n
⇒ n = 6n - 90
⇒ n = 18
∴ Green balls = 18 - 15 = 3
