HallieBreanne HallieBreanne

16-02-2017
Mathematics

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Count the possible combinations of 4 letters chosen from D, E, F, G, H.

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Reennaa Reennaa

16-02-2017

you would use the formula nCr

n= 5 which is the number of letters available which are D E F G H

r= 4 sample of letters

you can easily plug into the calculator... or work with the formula!

5C4 = 5

so there are 5 combinations

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