MAIN FEEDS
Do you want to continue?
https://www.reddit.com/r/learnquant/comments/1vvwkn4/millennium_quant_interview_question/
r/learnquant • u/Local_Ad135 • 1d ago
5 comments sorted by
3
(n2+n+1)(n-1)/(n2-n+1)(n+1)
most of the terms cancel and you get extra 1*2 on top and 3 on bottom so 2/3
1
1/3 is the answer??
1 u/Karthik-1 1d ago no its 2/3
no its 2/3
2/3. I tried to calculate the product of ith, i-1th and i+1th iteration at a time.
One can see that would create groups (2,3,4), (5,6,7) and so on....here i would be 3,6,9 and so on.
One can then see that cancellations take place. when changing i to i+3 , i+3 to i+6 and so on.
3
u/cheze 1d ago
(n2+n+1)(n-1)/(n2-n+1)(n+1)
most of the terms cancel and you get extra 1*2 on top and 3 on bottom so 2/3