Question

30 people in a room. 22 like red, 23 like blue. 24 like black. what's the minimum number of people that like all 3 colors simultaneously

Answer 1

perk i got 9

Answer 2

this is teddy's answer

teddyiswhatshecallsme

you do 22+23-30=15 -> minimum 15 people like red AND blue then 15+24-30=9 -> minimum 9 people like (red AND blue) AND black