Question

The chaperones for a field trip to the museum will be 7 history teachers and 13 science teachers. each student on the trip will be assigned to a group led by two chaperones. what is the approximate probability that a random student on the trip will be assigned to a group led by two history teachers?

Answer 1

.1105

Explanation:

There are 20 chaps 20 c 2 = 190 combos

7 out of 20 first one is history

6 out of 19 second is history

7/20 * 6/19 = 21 out of 190 choices =.1105

Answer 2

Answer: 11.1%

Explanation: