Krishna puts the letters of the word SCHOOL on pieces of paper and puts the pieces in a bag. He draws two letters without looking. The first piece of paper is NOT REPLACED before the second piece is drawn. What is the probability that Krishna draws an O twice?
(1 point)
Responses
115
1
15
1 over 15
215
2
15
2 over 15
136
1
36
1 over 36
118
1
18
1 over 18
2/15
There are a total of 6 letters in the word SCHOOL, out of which 2 are O's. So the probability of drawing an O on the first draw is 2/6 = 1/3. Since the first letter is not replaced, there are 5 letters left in the bag for the second draw, including 1 O. So the probability of drawing an O on the second draw is 1/5.
Therefore, the probability of drawing an O twice is (1/3) * (1/5) = 1/15 = 2/15.