Question 1135813
How many seven letter code words can be formed using a standard 26 letter
alphabet if the first letter has to be a C and the rest of letters are
different? 
<pre>
C _ _ _ _ _ _

Answer: 25 remaining letters POSITION 6 remaining spaces = 25P6 = 127512000</pre>
And if the first two letters have to be a vowel<pre> 
That's 5 vowels POSITION 2 = 5P2</pre> 
and the rest of the letters are different?<pre>

That's 24 remaining letters POSITION 5 = 24P5

Answer: (5P2)(24P5) = (20)(5100480)n = 102009600

Edwin</pre>