How many words can be formed with the letters of the word 'FAILURE' in which consonants may occupy even positions?

Explanation

To solve the problem of how many words can be formed with the letters of the word "FAILURE" such that consonants occupy even positions, we will follow these steps:

### Step 1: Identify the letters and their types
The word "FAILURE" consists of 7 letters:
- Consonants: F, L, R
- Vowels: A, I, U, E

### Step 2: Determine the positions
...