First digit can be any of the 4 numbers, second can be any of the unused three etc so 4 x 3 x 2 x 1 = 24 different numbers.
256
Repeating numbers are digits that occur more than once within a given set or sequence, such as the number 1223, where the digit '2' appears twice. In contrast, non-repeating numbers contain all unique digits, with no digit appearing more than once, like the number 1234. The distinction is important in various mathematical contexts, such as combinatorics and probability, where the arrangement and selection of digits can affect outcomes.
975
0.0588
The answer is 3*3*2*1 = 18. If the leading digit is 0 it is not a 4-digit number.
256
Repeating numbers are digits that occur more than once within a given set or sequence, such as the number 1223, where the digit '2' appears twice. In contrast, non-repeating numbers contain all unique digits, with no digit appearing more than once, like the number 1234. The distinction is important in various mathematical contexts, such as combinatorics and probability, where the arrangement and selection of digits can affect outcomes.
987652431
975
98765
-58264
86420
4 x 3 x 2 ie 24
0.0588
The answer is 3*3*2*1 = 18. If the leading digit is 0 it is not a 4-digit number.
9,876,543
The number is 9875.