The difference between 9999 and 999.9 is:
9999 - 999.9 = 8999.1
.9999 is 10 times purer (10 times less impurities).
9999
If by "between" you mean "between but not including", then the answer is 9999 - 999 - 1 = 8999.If on the other hand, you mean to include both 9999 and 999, then the answer is 9999 - 999 + 1 = 9001.
100000 - 9999 = 90001
10000 , with just the difference of one integer
952 of them.
An infinite amount
9999
9999 - 999 = 9000
Largest 4 digit number with repetition is 9999 Largest 3 digit number without repetition is 987 Difference is 9999 - 987 = 9012.
There are 2828 integers between 1000 and 9999.
9999 - 102 = 9897