Question

when a number is divided by 9 remainder is 7, if twice the number is divided by 9 what is the remainder?​

Answer 1

Answer:

Gives 7 as remainder. Remainder when (3n - 1) is divided by 9. We have, n = 9q + 7, where g is the quotient. Hence, remainder is 2, when (3n - 1) is divided by 9.