Asked by HELP
How many three-letter code symbols can be formed from the letters A, C, K, L , and M without repetition?
Answers
Answered by
jim
Noting that ACK is not the same as KAC,
You can choose from 5 letters for your first
Then you can choose from 4 letters for your second.
Finally you can choose from 3 letters for your first
So you can choose in 5 * 4 * 3 ways.
You can choose from 5 letters for your first
Then you can choose from 4 letters for your second.
Finally you can choose from 3 letters for your first
So you can choose in 5 * 4 * 3 ways.
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