Question

suppose you had a very small set of numbers that contained only 0 and 1 would this set be closed under addition? if not give a counterexample.

please help me

Answer 1

no

1+1 = 2 , which is not in the set of {0,1}

Answer 2

suppose you had a very small set of numbers that contained only 0 and 1 would this set be closed under addition? if not give a counterexample.