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20 March, 23:58

Tien is making 5-letter security codes using only the letters M, N, P, Q, and R. She arranges the letters in a different order for each code, using every letter exactly once within each code. How many different codes can she make?

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  1. 21 March, 00:21
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    Step-by-step explanation:

    I think there are 5 letters so

    She can arrange it in 25 ways for different code

    Because 5 x 5 = 25
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