How many words can be formed from the letters of the word, TRIANGLE? How many of these will begin with `T` and end with `E ?`

Explanation

To solve the problem of how many words can be formed from the letters of the word "TRIANGLE" that begin with 'T' and end with 'E', we can follow these steps:

### Step 1: Identify the letters in the word "TRIANGLE"
The word "TRIANGLE" consists of the letters: T, R, I, A, N, G, L, E. This gives us a total of 8 letters.

### Step 2: Fix the first and last letters
According to the problem, we need to fix 'T' at the beginning and 'E' at the end of the arrangement. So, we have:
- First letter: T
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