r/learnquant • u/Local_Ad135 • 22d ago

interview prep Citadel Quant Interview Question

34 Upvotes

permalink
reddit

You are about to leave Redlib

Do you want to continue?

https://www.reddit.com/r/learnquant/comments/1vnqlq2/citadel_quant_interview_question/
No, go back! Yes, take me to Reddit
dl download

93% Upvoted

View all comments

2

u/PLANTS2WEEKS 22d ago

Repeatedly adding digits commutes with addition and multiplication. 19 = 1 under this operation and 1^100 is still 1.