1. Unique Letters:
* We have 4 unique letters: R, E, S, and K.
2. Repetition:
* The letter 'E' appears twice.
3. Calculate the Possibilities:
* Case 1: All Unique Letters:
* We have 4 choices for the first letter, 3 choices for the second, 2 for the third, and 1 for the last. This gives us 4 * 3 * 2 * 1 = 24 possibilities.
* Case 2: One Letter Repeats:
* We need to consider that the 'E' can be in any of the four positions. Let's figure out how many ways we can arrange the other letters: 3 * 2 * 1 = 6.
* Since the 'E' can be in any of the four spots, we multiply this by 4: 6 * 4 = 24 possibilities.
4. Total Words:
* Add the possibilities from both cases: 24 + 24 = 48
Therefore, there are 48 possible 4-letter words that can be made from the letters "RESKE".
Important Note: This calculation doesn't consider whether the words actually exist in the English language. It only counts the number of unique combinations of letters.