7. Reduce the following expressions mod 10. No calculators! Efficiency matters. a)1212345670 ∙ 189000076548906789 ∙ 1234501...

7. Reduce the following expressions mod 10. No calculators! Efficiency matters. a)1212345670 ∙ 189000076548906789 ∙ 1234501 ∙ 12345678917 b) 123456789 + 987654321 + 22222222222222 + 8679

Expert Solution

Thank you.

Colby Messinger answered 2 years ago

0 mod 35 = 〈0 mod 5, 0 mod 7〉 12 mod 35 = 〈2 mod...

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