self
Maths Puzzle
in a bag there are 10 black,8 white,and 5 red balls.three balla are chosen at random and one is found to be black.the probability the the rest two are white is?
Read Solution (Total 2)
-
- since 1 ball drawn is black remove that from total.. then find probability of selecting 2 whites from them
8c2/22c2=(8*7/2)/(22*21/2)=4/33 - 10 years agoHelpfull: Yes(6) No(0)
- 8/22*7/21=4/33
- 10 years agoHelpfull: Yes(3) No(0)
self Other Question