How many diferrent 9-letter words (real or imaginary) can be formed from the letters in the word ECONOMICS? the ans. must be 90,720

asked Jan 5, 2018 154k views

5 votes

How many diferrent 9-letter words (real or imaginary) can be formed from the letters in the word ECONOMICS?

the ans. must be 90,720

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3 votes

Answer:

90,720

Explanation:

Cobrexus answered Jan 7, 2018

7.6k points

3 votes

Permutation with repeated elements (O, twice and C, twice).

10! / 2!2! = 10! / 2 x 2 = 3628800 / 4 = 907200

Ourania answered Jan 12, 2018

8.9k points

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