24 ways.
24
There are 40,320 ways to arrange eight letters. In this case, around sixty of those ways will result in English words.
8
Just the one.
There are 4 characters.They can be arranged within themselves so they can be arranged in 24 ways.[Note : The formula for this is n! if there are n characters.]
There are 4*3*2*1 = 24 ways. However, if you consider ABCD as the same as DCBA - same neighbours, but left and right swapped - then there are only half as many.
4 or 24
You can arrange 4 in 2 ways 1x4 and 2x2.
you can arrange 8 pictures 28 different ways
you can arrange three beads 9 different ways.
24 ways.
120
6
24
24.
30