Question

If the total number of seniors in the academy is 84, what is the total number of students who belong to the set (~M ∩ C) ∩ ~B?

7

19

26

49

Answer 1

what does the ~ sign mean?

Answer 2

I don't know..
That's why I don't understand this one.

Answer 3

I just think it's there to just be their.. lol

Answer 4

i think it is the M' and B'
if it is so,answer is 19.

Answer 5

Thanks (:
Your such a big help.

Answer 6

you are welcome :-)