Question

A bag contains 4 white balls and some red balls . If the probability of drawing a red ball is double that of the white ball then find the number of red balls

Answer 1

If probability of drawing a red ball is double that of the white ball

means: if we take no. of white ball=1 so, no. of red ball will be 2.

Given: no. of white balls =4

so, no. of red balls = double of white balls = 8

so, answer is 8