In modular arithmetic, which of the following is true for any integer k?

Practice Questions

Q1
In modular arithmetic, which of the following is true for any integer k?
  1. k mod 1 = 0
  2. k mod k = 1
  3. k mod 0 is undefined
  4. k mod k = 0

Questions & Step-by-Step Solutions

In modular arithmetic, which of the following is true for any integer k?
  • Step 1: Understand what 'mod' means. 'k mod k' means we are finding the remainder when k is divided by k.
  • Step 2: Remember that any number divided by itself equals 1, with no remainder. For example, 5 divided by 5 equals 1.
  • Step 3: Since there is no remainder when k is divided by k, we can say that the remainder is 0.
  • Step 4: Therefore, for any integer k, the result of k mod k is always 0.
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