Question

if there are 5 white balls and 3 red balls.. and 3 balls are drawn randomly frm them such the the ball once taken is thrown away..
what is the probability that the 4th ball drawn is red.; if there are 5 white balls and 3 red balls.. and 3 balls are drawn randomly frm them such the the ball once taken is thrown away..; what is the probability that the 4th ball drawn is red.

Answer 1

1.3 red ball and second answer is 1 white.

Answer 2

Answer:

13/14

Step-by-step explanation:

Draw a tree diagram:

The probability of picking red balls is:

1-P(WWWW)

P(WWWW)= 5/8×4/7×3/6×2/5

=120/1680

=1/14

∴1-1/14=13/14

ans=13/14