On dividing a positive integer n by 9, we get 7 as remainder. What will be the remainder if (3n – 1) is divided by 9?

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KollegeApply · Accepted Answer

2 Explanation: Write n = 9k + 7. Then 3n – 1 = 3(9k + 7) – 1 = 27k + 20 = 9(3k) + 2 So, the remainder on division by 9 is 2.

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