Question
In how many ways can a group of 2 boys and 2 girls be
made out of a total of 6 boys and 4 girls?Solution
Required number of ways = 6C2 × 4C2 = 6!/(4! ×2!) × 4!/(2! ×2!) = 15 × 6 = 90 ways
Which of the following pair of symbols will define the relation between Quantity I and Quantity II
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