Hi everybody,

I've read a new puzzle and I can not figure this out, though my former colleague did it in seconds.

Here it is:

30 blind people participated in an experiment. In a closed room there were 5 drawers in 5 different colors. They were given 5 paper slips representing these colors and they have to match the colors.
It's known that all of them match at least one color.
10 matched only 1 color.
6 matched only 2.
4 matched only 3.

The question is: how many matched exactly 4 colors and how many matched exactly 5.

Thanks.

UPDATE. My colleague told me the solution. Now I see how stupid I was <g>