Big Online Courses Have a Problem. Here’s How We Tried to Fix It.

The Problem Here is some personal prejudice: I don’t love online courses. I
love learning in community, even in online communities, but online courses
rare...
4 weeks ago
The answer is 150.
ReplyDeleteIf three dice are thrown, the probability of NOT getting triple sixes is 1(1/6)^3 = 215/216. So the probability of not getting triple sixes in n throws is (215/216)^n
Now we solve an inequality.
(215/216)^n < 0.5
log[(215/216)^n] < log(0.5)
n * log(215/216) < log(0.5)
n > log(0.5)/log(215/216) = 149.37...
n >= 150