I answered all questions correctly. At the end they ask you for your name and your email.
> We have received your submission and will be responding shortly
> We have received your submission and will be responding shortly
2) He randomly picks 5 of them as "special"
3) He makes a list X of all unique letters in the codes of these 5 dishes
4) Guest picks a random dish. There are a few things that can happen:
A) The code of that dish has a letter that's not on the list X. Ignore.
B) All letters of that dish are on the list X. Two options:
B1) The dish the guest picked is one of the 5 special.
B2) The dish the guest picked is not one of the 5 special.
The answer to the second question of that problem is obvious, you don't need to write any code.
You want the probability that B2 happens given that B happened right? (prob(B2) / prob(B) not prob(B2) / prob (A or B))
Thanks