<PRE><B>Question 255058</B>
This is clearer if you do a Venn diagram. Anyway, here are the numbers.
M + H + E = 5
so M + H = 6 and therefore 1 is just doing M + H
and M + E = 7 therefore 2 are just doing M + E
and E + H = 9 therefore 4 are just doing E + H
11 are doing M from which you subtract the 5 doing all, the 1 doing M + H and the 2 doing M + E giving 3 just doing M
12 are doing H from which you subtract the 5 doing all, the 1 doing M + H and the 4 doing E + H giving 2 just doing H
19 are doing E, from which you subtract the 5 doing all, the 4 doing E + H and the 2 doing M +E giving 8 just doing English.
To summarise therefore
M+E+H = 5
M+E = 2
M+H = 1
E + H = 4
M = 3
E = 8
H = 2
which totals 25, so 3 are doing nothing. 3 are doing only M, and 3 + 2 + 8 = 13 are doing one subject.
If you can transcribe these to a Venn diagram it will look clearer</PRE>