Akuna Capital Interview Guide

Akuna Capital opens with two brutal timed tests, 80 math questions in 8 minutes and 24 sequence questions in 12, before a human ever reads your application.

Sample Akuna questions

Ten Wide, Bought for a Buck

On a railroad stock you buy the 60 60 -strike call for $2.00 \$2.00 and sell the 70 70 -strike call for $1.00 \$1.00 — same expiry, same number of shares. What is the maximum profit per share you can realize at expiration, and where must the stock finish to achieve it?

The Doubling Coin Game With No Fair Price

A dealer offers the following classic gamble. She flips a fair coin over and over, stopping at the first heads. If that first heads lands on flip number nn, she pays you $2n\$2^n — so \$2 if heads comes immediately, \$4 if it takes two flips, \$8 for three, and so on. What entry fee would make this game actuarially fair?

Engineering a Forty Percent Chance

A board-game designer wants a "critical hit" to occur with probability exactly 25 \frac{2}{5} , but the game ships with only a fair coin. Design a procedure using fair coin flips that declares a critical hit with probability exactly 25 \frac{2}{5} , and compute the expected number of flips it consumes.