Answer:
So the number of ways of choosing two distinct letters at a time is (42)=6. We can then add the duplicate pairs which are O,O and N,N to give a total of 8 possible pairs.
Answer:
It's 45, and it appears none of them are right.
Step-by-step explanation:
43 + (6 - 4)
43 + 2 =
45
Hope that helps!
