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nlexa [21]
3 years ago
14

A box contains 5 red and 5 green marbles. if 5 marbles are drawn without replacement, what is the expected number of red marbles

Mathematics
1 answer:
Slav-nsk [51]3 years ago
4 0
<span>P( 5 reds, 1 green) = 6C3*P(drawing the red ones 1st, 2nd, 3rd 4th) = 6C5(5/10)(4/9)(3/8)(2/7)(1/6)(5/5) = 1/42</span>
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