How many 4 digit possibilities can you make using 2, 5, 8, 0?
I need repeating, and non repeating. There's 24 no repeating, and 256 repeating, i need the numbers. I got locked out of my iphone and i'm willing to try this…
You can have 2580, 2508, 2058, 2085, 5280, 5820, 5208, 5028, 8250, 8520, 8025, 8052, 8502, 0852, 0825, 0582, 0528.possibly more but too many numbers gives me a headache
Non repeating:
you have 4 choices for the 1st number, 3 for the 2nd, 2 for the third, and 1 for the last number
multipy:
4*3*2*1 = 24
That's 4! (factorial)
The repeating calc is also simple
4 choices for each of the 4 positions:
multiply them
4*4*4*4 = 256
or
4^4
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