There are two kinds of goods.
How many ways of the delivery which I pass one of them to two persons each out of four persons ?
Answer
12 ways
Solution
The number of ways of choosing two persons among four persons is (4 × 3)/ ( 2 × 1) =6 ways.
The number of ways of handing out 2 goods to to two persons is 2 × 1 = 2 ways.
In all, 6 × 2 = 12 ways.