(12 x 11 x 10 x 9)/(4 x 3 x 2 x 1) = 11,880/24 = 495 different groups.
Three groups every time.
495/3 = 165 ways for the different groups to stand.
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There are 5040 ways.
7
20*19*18*17*16 = 1860480 ways.
I Dont Know [210]
6 ways. 32 divided by 1=32 32 divided by 2=16 32 divided by 4= 8 32 divided by 8 = 4 32 divided by 16= 2 32 divided by 32= 1