davidtrinh
New member
- Joined
- Dec 1, 2016
- Messages
- 10
(ex) How many words can you make using TATTOO if you have to begin with two T's?
I try to solve it using combinations.
Consider T T_ _ _ _
The first two positions are saved for the two T's. Now, you can arrange the remaining letters in 4!=24 ways.
But, the answer key says 9.
How do you solve the problem? Thanks for your help.
I try to solve it using combinations.
Consider T T_ _ _ _
The first two positions are saved for the two T's. Now, you can arrange the remaining letters in 4!=24 ways.
But, the answer key says 9.
How do you solve the problem? Thanks for your help.