1. Consider f be function from set of nonnegative integers to set fo nonnegative integers, stated by f(x) = [x/3]. Is f onto? One-to-one? Explain why or why not?
2. Let R be the equivaence relation defined by partition {{1}, {2,4},{3}} on set of X = {1234}. Determine list of members of R and draw the digraph of R.