* 123 * 234 * 345 * 456 * 567 * 678 * 789 I assume this is what you meant. Thanks, but I need all numbers such as 245, 246, 247, 345, 346, 347, 125,137,etc...any number with 3 increasing digits. There are 84 numbers that meet the criterion. 123, 124, 125, ..., 178, 179, 189 = 28 234, 235, 236, ..., 278, 279, 289 = 21 345, 346, 347, ..., 378, 379, 389 = 15 456, 457, 458, 459, 467, 468, 469, 478, 479, 489 = 10 567, 568, 569, 578, 579, 589 = 6 678, 679, 689 = 3 789 = 1
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There is only one 4-digit combination which is 7498, or 4789 if you prefer the digits in increasing order.
If you mean 3-digit numbers whose digits are in decreasing order, then the answer is 20.
3 and 6
The positional place values of digits in negative numbers are in ascending order from least to greatest as for example in the number -987 the least value digit is 9 and the greatest value digit is 7 because -900 < -80 < -7 The positional place values of digits in positive numbers are in descending order from greatest to least as for example in the number 987 the least value digit is 7 and the greatest value digit is 9 because 900 > 80 > 7
Just one. In a combination, the order of the digits does not matter.