Six.
10000 ; This may look to be wrong but you can have 0001 to 9999 which gives you 9999 different combinations of 4 digits, plus another one for 0000.
4: 1999,9199,9919,9991
There can be 103 = 1000 codes.
List the odd four-digit numerals,each containing the digits ,4,5 and 6.
Six.
10000 ; This may look to be wrong but you can have 0001 to 9999 which gives you 9999 different combinations of 4 digits, plus another one for 0000.
24
4: 1999,9199,9919,9991
There are 210 4 digit combinations and 5040 different 4 digit codes.
467853 different 4 digit #s...467853 different 4 digit #s...
IV = ivy(4 in roman numerals).
There can be 103 = 1000 codes.
List the odd four-digit numerals,each containing the digits ,4,5 and 6.
3024
4 represents the 100s place value, so 4/100.
5*5*4*4 = 400