The table shows the membership in the high school band.
HS Band: Boys, Girls
Freshmen: 10, 8
Sophomores: 7, 11
Juniors: 10, 9
Seniors: 9, 7
What is the probability that a boy and a girl chosen randomly will both be seniors?
A. 1/4
B. 1/5
C. 1/9
D. 1/20
I believe it is B. 1/5 considering there are 3 rows and 5 columns. 3*5 = 15, so 3/15. Then 3/15 simplified would be 1/5. This is my answer and reasoning, just wanted to confirm with someone else to make sure this is right. Thank you!
HS Band: Boys, Girls
Freshmen: 10, 8
Sophomores: 7, 11
Juniors: 10, 9
Seniors: 9, 7
What is the probability that a boy and a girl chosen randomly will both be seniors?
A. 1/4
B. 1/5
C. 1/9
D. 1/20
I believe it is B. 1/5 considering there are 3 rows and 5 columns. 3*5 = 15, so 3/15. Then 3/15 simplified would be 1/5. This is my answer and reasoning, just wanted to confirm with someone else to make sure this is right. Thank you!