5 marbles are placed in 5 diff boxes randomly . find the prob. that exactly two boxes remain empty . Given each box can hold any no of marbles ?

Taking these parameters into consideration that

all boxes look alike and we dont care abt how many marbles are thr in each box,

they are total possible 6 cases,

none of box empty

1 box empty

2 box empty

3 box empty

4 box empty

5 box empty

required prob. is 1/6

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any other solutions from other experts are most welcome and appreciated

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regards

Ramesh