Question

3. Given that $A=\left\{2,5,7,8,10\right\},B=\left\{5,7,2,x,10\right\}$ and A=B, write the value of x.

Answer 1

As given in the question, A=B it means that A and B both have same elements.

We can see that on comparing A and B all the elements of A are present in B except $8$ So $x=8$