Question

Verify the above rule for the given Venn diagra
* (A)-O. (B)
n )
-(AUB-On-D
..(AUB) -(A) + n(B) - n(AB)​

Answer 1

Answer:

Here from vendiagram

n(a-b) =n(a)-n(anb)

And, n(b-a) =n(b)-n(anb)

Again from vendiagram we get 1 formula

n(aub)=n(a-b)+n(b-a)+n(a-b)

n(aub)=n(a)+n(b)-n(anb) [putting the value of n(a-b), n(b-a) ]

Hence proved.