The second flower, given by two children, has two possibilities.

The third flower, only the last child can send it, 1 possibility.

3*2* 1=6

That is, six delivery methods.

Three flowers are red, yellow and white, and the children are A, B and C.

Red a, yellow b and white c

Red a, yellow c and white b

Hong yi Huang Bai Jia pancake

Red b, yellow c and white a

Red, yellow, yellow and white

Red, yellow, yellow and white nails

One * * * six, you count.