0606 P22 - Nov 2019 - Q3 - 6 marks
8367
A 5-digit code is formed using these characters.
| Letters | \(a,e,i,o,u\) |
|---|---|
| Numbers | \(1,2,3,4,5,6\) |
| Symbols | \(@,\ *,\ \#\) |
No character can be repeated in a code. Find the number of possible codes if
(i) there are no restrictions,
(ii) the code starts with a symbol followed by two letters and then two numbers,
(iii) the first two characters are numbers, and no other numbers appear in the code.
Solutions locked. Please sign in with access to view them.