Tony Stark is playing a word game where he's trying to make 4-letter words by rearranging the letters in the word IRON.
How many unique ways are there to arrange the letters in the word IRON?

The word IRON can be arranged  is 24 unique ways.

Step-by-step explanation:

Given:

The word = IRON

To Find:

The number of unique ways in which the letters in the word IRON can be arranged = ?

Solution:

The number of letters in IRON = 4

The number of positions = 4

In the first position, any one of the 4 letters can be placed

In the second position any one of the remaining 3 letters can be placed

In the third position any one of the remaining 2 letter can be placed

The fourth position can be filled with the left over letter

So the total number of unique way

24

439400

step-by-step explanation:

130^2 = 16900

16900*26 = 439400

9 x 8 divided by (5-3)=36