65% of children in a sport club play football, 70% play volley-ball and 75% play basket ball. What is
the minimum number of children playing all the three games, if the total number of children in the
sport club is 90
Welcome to the forum.
Have a look at this thread:
I have shown there how you can do these 3 set problems.
ps. I'm a bit worried about these children as there seem to be half children in some sets.
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei