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jeka94
3 years ago
10

A box contains 10 purple marbles, 11 green marbles and 7 yellow marbles. if you pick two without looking, what is the probabilit

y that one will be green and the other will be yellow
Mathematics
1 answer:
Shkiper50 [21]3 years ago
8 0
Use combination
probability = (11C1 + 7C1)/28C2
probability = (11+7)/378
probability = 18/378
probability = 1/21
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