decimal system

Prove that the remainder of the division by 9 of a positive integer written in the decimal system is equal to the remainder of division by 9 of the sum of its digits.

Discrete Math Test 3 Your solutions should be submitted through Canvas in .pdf in 60 minutes. What is the greatest common divisor of 4655 and 17689?. An answer without a relevant calculation will receive no credit. 2. Find all x so that |x + 1| + 3 |x − 2| < 5. An answer without […]

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