Question

If A and B are two sets such that n(A)=17, n(B)=23, n(A∪B)=35, find n(A∩B)

Answer 1

Answer:

7(-15)+3(-2)+4(-3-2)

2) -7+(-15)+3+(-2)+4(-3)-12

3) 7-15-2(-3)-4(-2)-3(4)

4) 2×3-5+1-4+3×2

5) -4-11+6(-3)-3(-2)-11