210 digit numbers
How Many 4 Digit Numbers Can Be Formed Using The Digits 0,1,2,3,4,5,6,7,8,9?
45,46,47,48,49
Like I will take my time to do that
210
How many 6-digit numbers can be formed using the digits 0,1,2,3,4,5,6,7,8,9, if repetitions of digits are allowed?
9999 - 999 = 9000
There are 10,000 numbers 0000 through 9999.
If you don't like leading zeros, there are 9,000 numbers 1000 through 9999.
If you don't like leading zeros, there are 9,000 numbers 1000 through 9999.
11 Combinations of 4 digit numbers can be made. 1234, 2345, 3456, 4567, 5678, 6789, 9876, 8765, 7654, 6543, 5432, 4321, 3210.