Locker combination with 3,5,7 and 9 how many combinations

cher has forgotten her locker combination she knows it has 3,5,7, and 9 in it does not know the order tries every possible combination how many combinations
Asked Jan 16, 2012
If the four numbers are the only numbers in the combination and the order is the only issue, there are 16 possibilities.
Answered Jan 16, 2012
yes to the first two but how did u get that answerer
and can u also help me with my next problem

the length of a rectangle is twice the with . the perimeter is 42 what is the length and with
If you do the same problem with the combinations 1,2,3,4, how many possibilities are there? One can appear in four places, two can also, so can three and four. You have four numbers that can appear in four orders. How would I have arrived at 16?
Rob Jan 16, 2012

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