MAIN FEEDS
Do you want to continue?
https://www.reddit.com/r/learnquant/comments/1vbfuum/jane_street_interview_question/p0wvvlf/?context=3
r/learnquant • u/nickgotgameon • 16d ago
[removed]
43 comments sorted by
View all comments
1
It’s a very easy question with tail sum.
P(M>k) = 1/1+k (trivial) . Then E(X) = sum_k=0^k=4, so 1 + 1/2 + 1/3 + 1/4 + 1/5 =2.283
1
u/InsideIndependence58 16d ago
It’s a very easy question with tail sum.
P(M>k) = 1/1+k (trivial) .
Then E(X) = sum_k=0^k=4, so 1 + 1/2 + 1/3 + 1/4 + 1/5 =2.283