SOLUTION: Threr children are chosen at random from a class of 13boys anf 18 girls. Find the probability that 2 boys and 1 girl are chosen.

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Question 936249: Threr children are chosen at random from a class of 13boys anf 18 girls. Find the probability that 2 boys and 1 girl are chosen.
Answer by srinivas.g(540) About Me  (Show Source):
You can put this solution on YOUR website!
2 boys can be selected out of 13 boys in 13c2 ways
13c2 = %2813%2A12%29%2F%282%2A1%29
=13%2A6
=78
1 girl can be chosen out of 18 girls in 18c1 ways
18c1 =18/1 = 18
2 boys and 1 girl are chosen in 78*18 ways
= 1404 ways
result : 1404 ways