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Question

When a number is divided by 7, the remainder is 2. What is the remainder when three times the number minus 7 is divided by 7?

Accepted Answer

If our number is n, then n 2 7. This tells us that 3n - 7 = n + n + n - 7 6 - 0 7.The remainder is 6 when the number is divided by 7.