Weekly Math Challenge?

Question

Here is a sequence of Letters:
O T T F F S __ __ __ __

Answer 1

It is going by numbers like One Two Three Four Five Six

So then you have to find the next number

Seven, Eight, Nine, Ten

S,E,N,T

I did this in math class yesterday!

~Kristin ♥

Answer 2

S E N T

One, Two, Three, Four Five, Six,
Seven, Eight, Nine Ten

Answer 3

and what do you want me to do with the sequence of letters?