Question
A group consists of 9 boys and 7 girls. In how many ways
can 4 boys and 3 girls be selected from the group?Solution
Required number of ways = 9C4 × 7 C3
= (9! / (4! × 5!)) × (7! / (3! × 4!))
= 126 × 35 = 4,410
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Odd one out
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s _ u v _ x _...
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