Help!!!! How does this work? (1 Viewer)

Epicman69

Active Member
Joined
Jan 24, 2020
Messages
213
Gender
Male
HSC
2022
In a raffle, the chance of winning a prize is one out of ten. If I purchase twelve tickets, what is the probability of winning exactly two prizes? Stuck on this question please send help!!!
 

dumNerd

Well-Known Member
Joined
May 11, 2020
Messages
408
Gender
Male
HSC
2022
In a raffle, the chance of winning a prize is one out of ten. If I purchase twelve tickets, what is the probability of winning exactly two prizes? Stuck on this question please send help!!!
I swear smthung is missing from this
 

Epicman69

Active Member
Joined
Jan 24, 2020
Messages
213
Gender
Male
HSC
2022
You don't know sample space how is this question even possible the chances of winning are also variable
idk but the question wants me to use perms and combs but I got stuck
 

Epicman69

Active Member
Joined
Jan 24, 2020
Messages
213
Gender
Male
HSC
2022
Does it want us to assume that there are 120 people in running to buy it?
Prolly not Idk how it would work, I supposed there would be a 12C2 way of winning from the 12 tickets? but I got stuck from there lol
 

fan96

617 pages
Joined
May 25, 2017
Messages
543
Location
NSW
Gender
Male
HSC
2018
Uni Grad
2024
The question is poorly worded, but if each ticket is for a separate raffle drawing then binomial probability gives

 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top