Rearrange the first four letters, in any way, of the word DECISION. Find how many words can be formed by using all the four words.

Options

A. One
B. Two
C. Three
D. More than three

Explanation

To solve the problem of rearranging the first four letters of the word "DECISION," we will follow these steps:

### Step 1: Identify the first four letters
The first four letters of the word "DECISION" are D, E, C, and I.

### Step 2: Determine the number of letters
We have a total of 4 letters: D, E, C, and I.

### Step 3: Calculate the number of arrangements
Since all the letters are unique, we can use the formula for permutations of n distinct objects, which is given by n! (n factorial).

Here, n = 4 (the number of letters).

So, we calculate:
\[ 4! = 4 \times 3 \times 2 \times 1 = 24 \]

### Step 4: Conclusion
Therefore, the total number of different arrangements (or words) that can be formed using the letters D, E, C, and I is 24.

### Summary of the Solution
The number of words that can be formed by rearranging the first four letters of the word "DECISION" (D, E, C, I) is **24**.

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