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 -

Let S = {1,2,3,.............. n} and A={(a ,b)"|"1lt=a ,blt=n}=SxxS . A subset B of A is such that (x ,x) in B for every x in Sdot Then find the number of subsets Bdot

Let S = {1,2,3,.............. n} and A={(a ,b)"|"1lt=a ,blt=n}=SxxS . A subset B of A is such that (x ,x) in B for every x in Sdot Then find the number of subsets Bdot

Let S = {1,2,3,.............. n} and A={(a ,b)"|"1lt=a ,blt=n}=SxxS . A subset B of A is such that (x ,x) in B for every x in Sdot Then find the number of subsets Bdot

Let S = {1,2,3,.............. n} and A={(a ,b)"|"1lt=a ,blt=n}=SxxS . A subset B of A is such that (x ,x) in B for every x in Sdot Then find the number of subsets Bdot

The number of subsets of the set {a, b} is :

Let X={2,3,4,5,6,7,8,9,10} .A subset S of X is said to be good if it has exactly four numbers and their g.c.d is 1 .Then ,the number of good subsets of S is

If n(A)=6 and n(B)=3, then find the number of subsets of A xx B .

Let S={1,2,3,4,.............10}. A subset B of S is said to be good if the product of the elements of B is odd, Then the probability that a randomly chosen subset of S is good is