Let f:N-N be defined by f(n)={ n+1/2 if n is odd ,n/2 if is even} show that f is bijective function
Question
If X and Y are two sets such that . has 50 elements, X has 28 elements and Y has 32 elements, how many elements does haveIf X and Y are two sets such that . has 50 elements, X has 28 elements and Y has 32 elements, how many elements does have