The answer is 5 factorial or 5*4*3*2*1 or 120
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24, 1*2*3*4
The number of different ways that you can arrange 15 different items is given by the permutations of 15 things taken 15 at a time. That is 15 factorial, or 1,307,674,368,000.
In a line in 6! = 6*5*4*3*2*1 = 720 ways.
There are 10 letters is the word JOURNALISM. Since they are all different, the number of ways you can arrange them is simply the number of permutations of 10 things taken 10 at a time, or 10 factorial, or 3,628,800.
you can arrange 8 pictures 28 different ways