Question

Is it true that if a number ends in 3 , then it must be divisible by 3 ? Why or why not?

   Is it true that if a number ends in 3 , then it must be divisible by 3 ? Why or why not?

Applied Algebra: Codes, Ciphers and Discrete Algorithms

Applied Algebra: Codes, Ciphers and Discrete Algorithms

Darel W. Hardy, Fred… 2nd Edition

Chapter 1, Problem 9

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Step 1

The question asks whether every number that ends in the digit 3 is divisible by 3. This means that if you take any number, and its last digit is 3, you need to determine if the entire number can be divided by 3 without leaving a remainder. Show more…

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Is it true that if a number ends in 3 , then it must be divisible by 3 ? Why or why not?

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