Question

let n(a) =50,(a'union b') =40, n(union) =60 then n(a-b) is: a) 10,b) 20 c) 30 and d) 40. ​

Answer 1

Step-by-step explanation:

• nmdndbdmsmbd. hdjbsvskkskebw dhjebebenbdbddnbsbddbjshsdnd djjsbsndndbbdbdvbdggghhbdbxbbxbzzbbzbz