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Find the number of distinct arrangements of the 10 letters in INITIATION.Two of the same letter are considered identical (not distinct).

Question

Find the number of distinct arrangements of the 10 letters in INITIATION.Two of the same letter are considered identical (not distinct).

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Solution

To find the number of distinct arrangements of the letters in "INITIATION", we can use the formula for permutations of multiset: n! / (r1! * r2! * ... * rk!), where n is the total number of items, and r1, r2, ..., rk are the numbers of each type of item.

In "INITIATION", there are 10 letters in total.

The letter 'I' appears 3 times, 'N' appears 2 times, 'T' appears 2 times, and the letters 'A' and 'O' each appear once.

So, the number of distinct arrangements is:

10! / (3! * 2! * 2! * 1! * 1!) = 3,628,800 / (6 * 2 * 2 * 1 * 1) = 151,200.

This problem has been solved

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