SOLUTION: An urn contains 8 white balls and 4 red balls. In how many ways can 4 balls be drawn if a) 3 balls are white an 1 is red b) 2 balls are white and 2 are red c) all four balls are

Question 63950: An urn contains 8 white balls and 4 red balls. In how many ways can 4 balls be drawn if
a) 3 balls are white an 1 is red
b) 2 balls are white and 2 are red
c) all four balls are white
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
An urn contains 8 white balls and 4 red balls. In how many ways can 4 balls be drawn if
a) 3 balls are white an 1 is red
[8C3][4C1]= 56*4=224
b) 2 balls are white and 2 are red
[8C2][4C2]=28*6=168
c) all four balls are white
8C4=70
--------------
Cheers,
Stan H.

RELATED QUESTIONS
An urn contains 4 white balls and 6 red balls. A second urn contains 6 white balls and 4... (answered by greenestamps,math_tutor2020)

An run contains 8 red, 3 white and 9 blue balls if 3 balls are drawn at random, determine (answered by stanbon)

Question 1 - Consider two urns. Urn 1 contains 4 red balls and 2 white balls, and urn 2... (answered by solver91311,Natolino1983)

Urn 1 contains 3 red balls and 4 black balls. Urn 2 contains 4 red balls and 2 black... (answered by jim_thompson5910)

An urn contains 40 balls. Some are red balls and the rest are white balls. If the... (answered by Shin123)

Urn 1 contains 6 red balls and 5 black balls. Urn 2 contains 3 red balls and 3 black... (answered by Boreal)

A bag contains 2 white and 3 red balls.in how many ways can 3 balls be choosen if at... (answered by ewatrrr)

Urn 1 contains 7 red balls and 4 black balls. Urn 2 contains 4 red balls and 1 black... (answered by math_helper,ikleyn)

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