Question

proof that. n(aub)=n(a)+n(b)-n(a∩b)​

Answer 1

Answer:

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

Step-by-step explanation:

let us take a to multiples of 3 and b to be multiples of 4

total possibility is 20

10= 6+5-1

10=10