We don't generally consider the negative factors of positive numbers, but they are exactly the same digits as the positive factors, just with minus signs.
Placing a question mark at the end of a phrase does not make it a sensible question. Please use complete sentences and, if possible, include context.
Bakugan Dimensions
You need at least two numbers to find a GCF.
their both based on units of measure
1000
Counting from 000 to 999 would give a possible 1000 combinations.
10,000
There are 10000 such codes. Each of the numbers 0-9 can be in the first position. With each such first digit, each of the numbers 0-9 can be in the second position. With each such pair of the first two digits, each of the numbers 0-9 can be in the third position. etc.
Possible solutions - using your rules are:- 11,13,17,31,33,37,71,73 &77
900 ,999 ,909
290
Possible 5 digit combinations using 5 digits only 1 time is 5! or 5*4*3*2*1 or 120. Using 5 digits where numbers can be used 5 times is 55 or 3125.
If repetition of digits isn't allowed, then no13-digit sequencescan be formed from only 5 digits.
There are 2 possible digits for the first digit (3 or 4), leaving 3 possible digits for the second digit (5 and 6 and whichever was not chosen for the first), leaving 2 possible digits for the third. Thus there are 2 × 3 × 2 = 12 possible 3 digit numbers.
2 * 2 * 2 * 2 It's not possible to make 16 without using the same numbers twice or without using whole numbers.
There are 4 possible numbers if the digits are not repeated; 18 if they are. Those are 3-digit numbers, assuming that zero would not be a leading digit. If zero is allowed for a leading digit, then you can have 6 for the non repeated, and 27 if repetition.