Mathematics, 01.09.2019 17:30 evafaith

If a and b are distinct positive integers. the units digit of a2 is equal to the units digit of a, and the units digit of b2 is equal to the units digit of
b. if the units digit of a·b is equal to neither the units digit of a nor the units digit of b, then what is the units digit of a·b?

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If a and b are distinct positive integers. the units digit of a2 is equal to the units digit of a, a...