Answer:
Step-by-step explanation:

Hence, on base 10, the next whole number is 4995 and if we convert back to base 9, we will have

Therefore, the number on base 9 will be 6750
Answer:
6:9
Step-by-step explanation:
the answer is 6:9 because 4:6' equivalent is 2:3, which is the same as 6:9
Answer:
12
Step-by-step explanation:
Well, 12/12=1, which I guess is the smallest number we can get, and 12 is divisible by 2 too.