Question

A bag contains 7 white, 5 black and 4 red balls. If two balls

are drawn at random, find the probability that

i. both the balls are white

ii. one ball is black and the other red

iii. both the balls are of the same colour​

Answer 1

P ( white)= 7/16

P( one red and one black)= 5+4/16= 9/16