Data Management Question

a)How many distinct five-letter words can be made by arranging the letters LINDSAY?

Violaaaa said:

a)How many distinct five-letter words can be made by arranging the letters LINDSAY?

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You have the seven letters, A, D, I, L, N, S, and Y. You are asked to choose five. You are asked for "distinct" five-letter sets.

So which formula should you use? What did you get when you applied this formula? Please be complete. Thank you!