# Homework Help: Data Management Question

1. Jun 12, 2009

How many arrangements of the letters in the word mathematics begin with a vowel and end with a letter other than h?

2. Jun 12, 2009

### Staff: Mentor

How would you go about approaching this problem? I assume the arrangements of letters do not have to make real words from the dictionary? Do all the words have to be the same length as the word mathematics?

3. Jun 12, 2009

### rock.freak667

MATHEMATICS

so you have 11 letters.

_ _ _ _ _ _ _ _ _ _ _
1 2 3 4 5 6 7 8 9 10 11 (letter position)

Each space for each letter.

You want position 1 to be a vowel. How many vowels do you have? So for position 1, how many ways can you select a vowel to start this arrangement? So in position 1, write down the number of vowels you can choose from.

By writing the number of vowels you can start with, you have in essence chosen a vowel to start with. How many letters are left to choose from? (This includes h).

Hence in position 11, how many letters can you put there excluding h?

Now how many letters do you have left? How many ways can you arrange the rest of letters in the remaining 9 spaces?