Teresa put tiles marked with the letters of her name into a bag. The back of each tile is blank.

Question

The tiles are shown below.
T
E
R
E
S
A
Without looking into the bag, Teresa will pick a tile.
a. What is the probability that Teresa will pick a tile with the letter T on it? Show or explain
how you got your answer.
b. What is the probability that Teresa will pick a tile with a vowel (A, E, I, O, U) on it?
Show or explain how you got your answer.
Suppose Teresa first picked a tile with a vowel on it. Now Teresa will pick a second tile.
• She will not put the first tile back into the bag.
• She will not look into the bag while picking the second tile.
c. What is the probability that Teresa will pick another tile with a vowel on it? Show or
explain how you got your answer.

Answer 1

a. Assuming that these are the only tiles in the bag, there are six possibilities. The letter T is only one of these possibilities = 1/6

This should give you an idea of how to do b and c.