SOLUTION: please help me to determine the number of sets of the colors in a rainbow

Question 1118806: please help me to determine the number of sets of the colors in a rainbow
Answer by ikleyn(52779) (Show Source): You can put this solution on YOUR website!
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There are 7 (seven) colors in a rainbow.

The number of all possible sub-sets of the set of 7 elements is , including the empty set and improper subset.

Probably, you will want to exclude the empty set.

Then you will have different subsets.

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