I got this question in my homework but i cant figure out the procedure. i don't want an exact solution but i just want a technique or you can say hint. i just want to which specific distribution it is related binomial,poisson etc
If n ≥ 1 balls are placed randomly into M ≥ 4 boxes such that each ball has equal chance of adding in any of the M boxes and the placement of different balls is independent. Let X is the number of balls in the first box and Y be the number of balls in the first four boxes.