Question

A bag contain 4 white balls and some red balls if probability of red ball is doubled than whitr ball find probability of red ball

Answer 1

3/5.....

becoz , there are double of red balls so it becomes 6 and the overall probability is 10 ....by adding white ball 4 and red balls 6 so its becomes 10 ...so 10 divided by 6 ...the and is 3 upon 5 ...3/5