Hello I need help with this problem
LetS be a set with n elements.
(a)How many ordered pairs are there in S × S ?
(b) How many relations are there on S (subsets of S × S) ?
Let A, B, C be 3 sets. Suppose |A| = |B| = |C| = 100, |A \ B| = 70,
|A \ C|= 50, |B \ C| = 45 and |A [B [ C| = 175. How many elements are there in A \ B \ C ?
\ means intersection and [ means union