-
sana.noor
- Legendary Member
- Posts: 512
- Joined: Mon Jun 18, 2012 11:31 pm
- Thanked: 42 times
- Followed by:20 members
There are 5 students and 4 teachers on the school publications committee. A group of 5 members is being selected at random to attend a workshop on school newspapers. What is the probability that the group attending the workshop will have at least 3 students?
a)9/24
b)9/14
c)3/4
d)7/14
e)8/16
[spoiler]9/14[/spoiler]
I understand that At least 3 students means the groups may have 3, 4, or 5 students. It is not
possible to select a group of 3 students, a group of 4 students, and a group of 5 students in the same 5-member group. Thus, the events are mutually exclusive. but i cant find the right answer..
a)9/24
b)9/14
c)3/4
d)7/14
e)8/16
[spoiler]9/14[/spoiler]
I understand that At least 3 students means the groups may have 3, 4, or 5 students. It is not
possible to select a group of 3 students, a group of 4 students, and a group of 5 students in the same 5-member group. Thus, the events are mutually exclusive. but i cant find the right answer..
Work hard in Silence, Let Success make the noise.
If you found my Post really helpful, then don't forget to click the Thank/follow me button.
If you found my Post really helpful, then don't forget to click the Thank/follow me button.
