check this answer before used but i dobelieve it is 169 possibilities
With repetition, there are 86 ( = 262144) such numbers. Without repetition, there are still 8!/2! = 20160.
No - a combination padlock has no key; a sequence of numbers opens it
Assuming no repetition, 12 x 11 x 10.... x 4 x 3 x 2. If repetition is allowed, 1212
When the repetition is allowed: 4*4*4 = 64 numbers. Without repetition: 4*3*2 = 24 numbers.
There are no numbers before the sequence!
Without repetition, just one. In a combination the order of the numbers is irrelevant.
A sequence.
If repetition is allowed . . . . . 343 If repetition is not allowed . . . . . 210
There are 504 such numbers.
64 if repetition is allowed.24 if repetition is not allowed.
Both rational and irrational numbers can be expressed with decimals. If the number is irrational, it will have an infinite number of decimal digits, and there will be no periodic repetition. For example, 1/7 (which is rational) is 0.142857 142857 142857... The same sequence of six digits repeats over and over again. In irrational numbers, this is not the case.
This is called a sequence and if we add the numbers in that sequence it is called a series.