If it has a 3 digit combination wheel, start a 000 and try to open it, then 001, 002, 003, etc all the way thru to 999. It takes time, it can be done.
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easy, its : Tomas, that's his branch
120 WRONG! That is the number of PERMUTATIONS. In the case of combinations, the order of the numbers does not matter, so there is only 1 5-number combination from 5 numbers.
Both. "Case sensitive" means that upper case and lower case characters are treated as different characters.
Depends on the sequence. There may be a formula for the Nth term in which case it is easy. Or the value may depend on some combination of previous terms (as in the Fibbonaci series).
To find the factors of a number you should first break that number down into its prime factors. In this case 65 can be broken down as: 65 = 5x13 To find any other factors, you then multiply any combination of these prime factors together. In this case, the factors of 65 come out as: 1, 5, 13 and 65.