Question

One ordering of the letters T, U, V and W from left to right UTVW. What is the total number of orderings of these letters from left to right, Including UTVW?
A. 8
B. 12
C . 16
D. 20
E. 24

Answer 1

Imagine you have 4 slots

You have 4 choices for slot 1
3 for slot 2 since you cannot reuse a letter
2 for slot 3
1 for slot 4

so overall, there are 4*3*2*1 = 24 ways to order the letters

Answer 2

the number is always 24?

Answer 3

if you're ordering 4 distinct objects, yes

Answer 4

how do you calculate?

Answer 5

I just showed it when I wrote `4*3*2*1 = 24`

Answer 6

Ok thanks!

Answer 7

you're welcome