Out of 65 players, 11 play basketball only and 33 play cricket only. If the number of players who play cricket is twice the number of players who play basketball, by using a Venn-diagram find the number of players who play both games and who do not play any of the games.
If I do the math, maybe you can fill in the diagram.
If x play both, then
33+x = 2(11+x)
x = 11
so now we know that
33+11+11 = 55, meaning that 10 play neither