demonicblackcat
Member
- Joined
- May 6, 2018
- Messages
- 53
- Gender
- Female
- HSC
- 2020
the question said at least one of them earns b/w 15 and 30, so you had to find the prob of both of them not earning b/w that (ie 0.185 x 0.185) and then do 1 - (0.185 x 0.185)why is it 96%? I also got 81.5%