No, the roman numeral for 9999 would be (IX)CMXCIX. In written roman numerals the (IX) in parentheses would have a bar on top. This denotes multiplication of 1000.
Exactly as in the question 9999
In today's modern terms it is: (IX)CMXCIX But the Romans themselves would have probably simply wrote it out as: I(X)
9998
That is 9998.
10000
10001 and 9999, possibly.
9998
the answer to what is the roman numeral for 101 is CI
XXV is the Roman Numeral for 25
324 written in roman numeral is CCCXXIV
No, K is not a roman numeral.
There is not a Roman Numeral for 0.