1.

There are 5 different boxes and 7 different balls. All the balls are to be distributed in the 5 boxes placd in a row so that any box can receive any number of balls. In how many ways can these balls be distributed so that box 2 and box 4 contain only 1 and 2 balls respectively?

Answer»

5522
8505
2305
none of these

Answer :B


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