Question

solve the following​

Answer 1

Answer:

Step-by-step explanation:

Use principle of Inclusion-Exclusion

Let X denote the set of all ordered pairs (A,b ) when  A⊆B .

Similarly let  Y denote  set of all ordered pairs (A,B ) when  B⊆A.

The question asks to find -:

n(X′⋂Y′) = n(S) −n(X⋃Y)

               = n(S) − n(X) − n(Y) + n(X⋂Y)

               = 2^10 - 3^5 - 3^5 + 2^5

               =570

Hope this will be helpful to you..!!