SOLUTION: A box contains 5 white and 7 black balls.Two successive drawn of 3 balls are made: (a) with replacement (b)without replacement. The probability that the first draw would produce wh

Question 1047754: A box contains 5 white and 7 black balls.Two successive drawn of 3 balls are made: (a) with replacement (b)without replacement. The probability that the first draw would produce white balls and second draw would produce black balls are respectively
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
Two successive drawn of 3 balls are made:
TOTAL = 12: 5W, 7B
1st draw(a) with replacement
Draw 3
P(3-W) = (5/12)(5/12)(5/12) = 125/1728
|
2nd draw(b)without replacement.
Draw 3
P(3-B) = (7/12)(6/11)(5/10) = 210/1320 = 21/132
P(both happening) = (125/1728)(21/132)
RELATED QUESTIONS
A box contains 2 white balls and 3 black balls. 2 balls are selected at random what is... (answered by stanbon)

A box contains three blue balls and three white balls. if two balls are drawn one at a... (answered by stanbon)

A box contains 3 white, 3 black balls. 3 balls are chosen from the box what is the prob.... (answered by edjones)

7. A box contains five colored balls and four white balls. If three balls are drawn... (answered by edjones)

A box contains 5 colored balls and 4 white balls. If three balls are drawn one by one,... (answered by edjones)

A bag containing 14 identical balls, 4 of which are red, 5 black and 5 white,6 balls are... (answered by ikleyn)

A box contains 2 red, 3 black, and 5 white balls. If 3 balls are drawn at random without... (answered by Fombitz)

A box contains 4 white balls and 3 red balls. Three balls are drawn from the box without (answered by Boreal)

A bag contains 3 green balls,6 black balls and one white ball.if two balls are drawn at... (answered by stanbon,ikleyn)