There are 300,000. All the integers from 100,000 to 399,999.
95
If the order of the numbers are important, then this is a simple combination problem. There are 10 possible numbers to choose from for the first number. Then there are 9 options for the second number. Then there are 8 options for the third, and so on. Thus, the number of possible combinations can be calculated as 10x9x8x7x6x5. This comes out at 151,200 possible combinations.
That is not a valid combination of Roman Numerals, so it isn't a number.
92
1992, that is what it is in regular numbers.
4 of them. In a combination the order of the numbers does not matter.
95
There are 60 possible numbers for the first number, A, in the combination (1,2,3,...,59,60).For each of outcome of A, there are 60 outcomes for the second number, B, giving a two digit combination 60x60=360 possibilities.For each of these 360 outcomes, there are 60 outcomes for the third number, C, making the number of possible combinations 360x60=21600.Or 60 possibilities x 60 possibilities x 60 possibilities = 21,600 possibilities.
If the order of the numbers are important, then this is a simple combination problem. There are 10 possible numbers to choose from for the first number. Then there are 9 options for the second number. Then there are 8 options for the third, and so on. Thus, the number of possible combinations can be calculated as 10x9x8x7x6x5. This comes out at 151,200 possible combinations.
No there actually more combinations that we can make with numbers than letters. That's not actually true, since there are more letters than numerals, but every combination of numerals is a number and there are an infinite number of them, whereas, not all combinations of letters actually make words--there is only a finite number of words.
92
1992, that is what it is in regular numbers.
That is not a valid combination of Roman Numerals, so it isn't a number.
Roman numerals are used as numbers. For example, the roman numeral for the number one is an I. The system can be used for any number.
The number 14 in Roman numerals is XIV
The number 13 in Roman numerals is XIII
Assuming each number can be used more than once.... 2401 possible combinations.