You are asked to distribute 10 balls into three groups: 2 balls, 3 balls, and 5 balls. (a) if the 10 balls are indistinguishable, how many different arrangements can you have
In how many ways can 20 identical balls be distributed
into 4 distinct boxes subject ?
a) With no constraints.
b) Each box gets at least two balls.
c) Box 1 gets exactly one ball and box 2 gets at least one ball.
d) Each box gets an even number of balls.
