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Draw and go (Posted on 2014-10-08) Difficulty: 3 of 5
A class, consisting of g girls and b boys receieved 2k promotional theatre tickets.
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    
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Some Thoughts Solution or partial solution | Comment 1 of 14
There is an equal probability of boys being theatre-goers as there is to girls, yet an EQUAL number of boys and girls may also be theatre-goers which makes the probability not equal to 0.5, but a smaller percentage. Given x as the probability that g = b, then the probability in question is equal to (1 - x)/2.

One unanswered question is whether any boy or girl can chose not to be a theatre-goer even if there is a promotional ticket available.


  Posted by Dej Mar on 2014-10-09 02:42:29
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