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.
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Answered by
1
1.3 red ball and second answer is 1 white.
Answered by
1
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
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