Answer:
What letter comes next: O T T F F S S ?
If eleven plus two equals one, what is nine plus five equal to?
What has two legs but doesn't walk?
Take one out and scratch my head I am now black but once was red.
I scribble forms of the finest letter, And repel elements of the harshest weather. I am an arrow-aimer and a dust-breaker.
How do you know if a sniper likes you?