Let `S={1,2,3,…..n}` and A = `{a,b)|1lea,blen}=SxxS`. A subset B of A is said to be a good subset if (x, x) `in` B for every `x in S`. Then number of
Let `S={1,2,3,…..n}` and A = `{a,b)|1lea,blen}=SxxS`. A subset B of A is said to be a good subset if (x, x) `in` B for every `x in S`. Then number of good subsets of A is -
A. `1`
B. `2^(n)`
C. `2^(n(n-1))`
D. `2^(n^(2))`
4 views