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How many distinct 5-letter code words can be formed from the letters in the word "TANTE" if the letters may not be repeated?

Mathematics

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Step-by-step solution

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First, let's analyze the letters in the word "TANTE": T, A, N, T, E.
There are 5 letters in total.
The distinct letters are T, A, N, E. There are 4 distinct letters.

i) The letters may not be repeated?

  1. Identify the total number of letters and any repetitions.

    The word "TANTE" has 5 letters. The letter 'T' appears twice, while 'A', 'N', and 'E' appear once.
    We are forming a 5-letter code word using these 5 letters, and the letters may not be repeated (meaning each instance of a letter is used exactly once). This is a permutation of a multiset.

  2. Apply the formula for permutations with repeated items.

    The number of distinct permutations of nn objects where there are n1n_1 identical objects of type 1, n2n_2 identical objects of type 2, etc., is given by n!n1!n2!...\frac{n!}{n_1! n_2! ...}.
    Here, n=5n=5 (total letters). The letter '

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