Asked 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)
Answered by Reiny
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
Answered by Student
my book says 1/5040
could you tell me how to get it

Answered by msp
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.
Answered by Student
youre my new bestfriend
thanks msp!
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