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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

2 answers

no

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