### Home > CCA2 > Chapter 1 > Lesson 1.2.4 > Problem 1-118

1-118.

Have you ever wondered why so many equations are written with the variables and

*? Suppose you are reaching into a bag that contains all the letters of the English alphabet, and you pull out one letter at random to use as a variable in equations.*

What is the probability that you pull out an

?If you got the

, now what is the probability that you pull out a?After you take out

, how many letters are left in the alphabet?