Questions
The number of ways we can put 5 different balls in 5 different boxes such that at most three boxes is empty, is equal to
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a
55 – 5
b
55 – 10
c
22 – 2
d
none of these
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Correct option is A
The number of ways of putting all the balls in exactly one box = 5As for each ball there are 5 choices for the box, the number of ways of putting balls in the boxes = 55Thus, the required number of ways of putting the balls in the boxes = 55 – 5Similar Questions
The number of ways in which we can get at least 6 successive tails when a coin is tossed 10 times in a row, is
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