In a modular arithmetic system, if 8 is congruent to 2 modulo n, what can be con

Practice Questions

Q1
In a modular arithmetic system, if 8 is congruent to 2 modulo n, what can be concluded about n?
  1. n must be 6
  2. n must be a factor of 6
  3. n must be greater than 6
  4. n must be less than 6

Questions & Step-by-Step Solutions

In a modular arithmetic system, if 8 is congruent to 2 modulo n, what can be concluded about n?
  • Step 1: Understand what 'congruent modulo n' means. It means that when you subtract the two numbers (8 and 2), the result should be divisible by n.
  • Step 2: Calculate the difference between the two numbers: 8 - 2 = 6.
  • Step 3: Since 8 is congruent to 2 modulo n, this means that n must divide the difference, which is 6.
  • Step 4: Identify the divisors of 6. The divisors of 6 are 1, 2, 3, and 6.
  • Step 5: Conclude that n can be any of the divisors of 6 (1, 2, 3, or 6).
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