Helping students gain understanding and self-confidence in algebra.
zorro wrote:...Now the probability that out of 6 balls selected 3 are red, 2 are white , 1 is blue
= P(R).P(R). P(R) + P(W).P(W) + P(B)
= 5/12 . 5/12. 5/12 + 4/12 . 4/12 + 3/12
= 12 (Is this correct ?)
Martingale wrote:12 is not a probability
zorro wrote:stapel_eliz wrote:Assuming the decimal points stand for multiplication, could you please show the steps in your arithmetic with the fractions?
Sorry silly mistakes ....
P(R).P(R).P(R) + P(W).P(W) + P(B) = 0.4289