A bag contains 'p' white balls 'Q' red balls and 'R'

Blue Balls A ball is drawn at the random find the probability of getting blue ball

probability is r/p+q+r

Step-by-step explanation:

to find the probability, you take the number of desired balls (blue in this case)

and divide it by the total number of balls in the problem (add them all up) to get your answer

I hope that answered your question!