Question

How many 4-digit numbers can be created such that the only digits that can be used are 3, 6 and 9, a specific digit can occur at most three times in the number, and the number must be divisible by 9?

Answer 1

Answer:

I hope this helps!

Step-by-step explanation:

• The only digits that can be used are 3, 6 and 9. • A specific digit can occur at most three times in the number. • The number must be divisible by 9.