Question 236859
5 balls are odd out of 9
{{{nCr=n!/((n-r)!r!)}}}
5C2/9C2 (number of combinations of 5 things taken 2 at a time) / (number of combinations of 9 things taken 2 at a time)
=10/36
=5/18 Probability that 2 drawn balls are odd.
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Ed