Question

If M={1,2,3,4,5} and N ={4,5,6,7} then evaluate n(M U N)

Answer 1

Step-by-step explanation:

Given : M={1,2,3,4,5,} and N={4,5,6,7}

n(M)=5

n(N)=4

MuN={1,2,3,4,5,6,7,}

n(MuN)=7

OR

n(M)+n(N)-n(MnN) =n(MuN)

=4+5-2

=9-2=7

Answer 2

Answer:

Given : M={1,2,3,4,5,} and N={4,5,6,7}

n(M)=5

n(N)=4

MuN={1,2,3,4,5,6,7,}

n(MuN)=7

OR

n(M)+n(N)-n(MnN) =n(MuN)

=4+5-2

=9-2=7(please follow)