Given that b<2k and g<2k, what is the probability that within the group of theatre-goers there will be more girls than boys?
| No Solution Yet | Submitted by Ady TZIDON |
| No Rating |
re: short amendment
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 | Comment 9 of 14 |  |
(In reply to short amendment by Ady TZIDON)
P(gs get 5 tkts)=C(14,5)*C(6,3)/C(20,14)
P(gs get 6 tkts)=C(14,6)*C(6,2)/C(20,14)
P(gs get 7 tkts)=C(14,7)*C(6,1)/C(20,14)
P(gs get 8 tkts)=C(14,8)*C(6,0)/C(20,14)
but
C(14,5)*C(6,3)/C(20,14) = 2002*20/38760 ~= 1.033023735810114
C(14,6)*C(6,2)/C(20,14)= 3003 * 15/38760 ~=1.16215170278638
etc.
all larger than 1.
| Posted by Charlie on 2014-10-11 22:32:53 |
