out of 9 boys the number to be taken to form a group ,so that the number of different groups may be greatest is
Answer (1)
11th Nov, 2018
It is a very simple question of Permutation and combination, Basically You want to maximise 9CN and You are interested in finding the value of N so that the value becomes greatest, the answer is simply 5 or4, because it will give the maximum value, So the answer is select 5 OR 4 in a group.
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