Kira attempts to write the word divisibility in cursive, but she mistakenly writes one of the letters incorrectly. What is the probability that Kira wrote a letter /incorrectly?
Assume each letter of the alphabet is equally difficult to write.

Afootball quarterback has two more chances to throw a touchdown before his team is forced to punt the ball. he misses the receiver on the first throw 25% of the time. when his first throw is incomplete, he misses the receiver on the second throw 15% of the time. what is the probability of not throwing the ball to a receiver on either throw?