An ordinary cubical dice having six faces marked with alphabets A, B, C, D, E, and F is thrown `n` times and ht list of `n` alphabets showing p are noted. Find the total number of ways in which among the alphabets A, B, C D, E and F only three of them appear in the list.

Explanation

To solve the problem of finding the total number of ways in which among the alphabets A, B, C, D, E, and F only three of them appear in the list after throwing a cubical die `n` times, we can follow these steps:

### Step 1: Choose 3 Letters from 6
We need to select 3 letters from the 6 available letters (A, B, C, D, E, F). The number of ways to choose 3 letters from 6 can be calculated using the combination formula:

\[ \text{Number of ways to choose 3 letters} = \binom{6}{3} \]
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