The number n is a 2-digit number. When n is divided by 10, the remainder is 9, and when n is divided by 9, the remainder is 8. What is the value of n?

Based on the problem, the number n can be expressed in two ways, which are n = 10a + 9 and n = 9b + 8, where a and b are integers. Since n is a two-digit number, checking the given options reveals that 89 satisfies both conditions. Dividing 89 by 10 leaves a remainder of 9, and dividing 89 by 9 gives a quotient of 9 with a remainder of 8. The value of n is 89.

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