Question

A and B are two sets. Given n(A union b)=36, n(A intersect B)=4 and n(B-A)=3[n(A-B)]

Answer 1

What are you supposed to do?

Answer 2

find n(A) and n(B)

Answer 3

What course are you taking?

Answer 4

form 6.. in malaysia

Answer 5

I've never heard of that

Answer 6

Sheg, any ideas?

Answer 7

is a pre-u course

Answer 8

A pre-who what? Yeah, I'm lost

Answer 9

pre-university

Answer 10

I see. Well, unless you can tell me what specific topic you are studying in your course, I doubt if I will be able to help

Answer 11

number and sets..

Answer 12

sub chapter sets..

Answer 13

yeah
n(AUB) = n(A) +n(B) -n(AnB)
36 = n(A) + n(B) - 4
n(A) + n(B) = 40

Answer 14

yes hero was trying to recoll the rules of set theory

Answer 15

Oh, I'm an idiot. I have done this before.

Answer 16

Good job Sheg