Question

A={10,20,30,40,50...} and B={x:x is a multiple of 10} state whether A=B or not​

Answer 1

Answer:

yes. because all elements of B also present in A and they are equal. So, A=B

Answer 2

Answer:

no,because every element of A is not an element of B. for e.g. -10 is a multiple of 10 and so a member of set B but it is not member of set A .