ALGEBRA
posted by Student .
The colors red, orange, green, blue, indigo, and violet are written on slips of paper and placed in a hat. What is the probability that the slips will be chosen in the order of the colors of a rainbow (the order listed above)

The colours can be arranged in 6! or 720 ways.
The above order is one of these.
So the prob of that particular order is 1/720 
my book says 1/5040
could you tell me how to get it 
I think you may have forgotten one of the colors...yellow. There are 7 colors in the rainbow, so it would be 7! or 7x6x5x4x3x2x1 which would give you 5040.

youre my new bestfriend
thanks msp!
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