Of 20 girls 16 plays hockey,12 plays tennis and 4playsbusket every girl plays at least one game and 2plays all the three games how many plays 2and only 2games
There are lots of solutions to this problem. One of them is
H=11
T=7
B=0
H&T=2
H&B=1
T&B=1
H&T&B=2
So, 4 play exactly two games.
But there is so much unspecified, the numbers can be juggled in many ways.
Draw a Venn diagram and fill in the center value of 2, and you can see other solutions.
Actually, the above solution is wrong. The total is not 20.
I need to think on it some more.