The answer is C, you can work backwards from the answers given.
If [0.5 (0.05 +0.1+0.2+0.5+1+2)]/(1-1/2^6) is the entry price, how much money does a player get per round?
They get 0.5*(all the coins) and there is also the additional probability of the bonus refund.
0.5*(all the coins) +...
How'd you do the inequalities??
I tried that for about 20 minutes then gave up...
I got n + k - 1 for the first one, combinatorics question as well using mod, and I had to rush question 5... did it shiftily though using binary... By any chance do you know the answer for question 5b? I got 171...
If the atar is a rank, like if you get 99 then you have beaten 99% of the cohort, then shouldn't the median atar be 50? How come it's 69.2? Really confused..