Question

If A = {1,2,3,4,5,6,7} and B ] {2,4,6} Cardinal number of AUB​

Answer 1

Answer:

please if any one knows the answer pls tell the answer.

Answer 2

Answer:

answer is 3

A union B is {2,4,6}

cardinal number means the no of elements is AUB

therefore answer is 3