Question

An urn contains 3 black balls amd4 white balls find probability that second ball is white

Answer 1

Step-by-step explanation:

Proceeding similarly, you will find the probability of both balls to be black = (3/8)*(2/7) = 3/28. Probability that both balls are of,the same color = 5/14 + 3/28 = 13/28. Second ball: This depends on the first ball drawn, lets say you drew a white ball initially, 4 white balls are left out of 7 balls in total.