A high school recorded the number of students in each grade participating in after-school activities. Band Choir Sports No Activities 9th9th grade 13 8 39 22 10th10th grade 16 12 29 40 11th11th grade...

A high school recorded the number of students in each grade participating in after-school activities.

Assuming no student participates in more than one activity, what is the probability that a band member is not in 12th grade?

Round your answer to the nearest hundredth, like this: 0.42