A bag of 4 balls, two red, one black, and one blue. You take two balls out at the same time, what's the probability that your second ball is red given the first ball is also red.
Quantitative Analyst Interview Questions
10,234 quantitative analyst interview questions shared by candidates
Find North Korea on a map.
a conditional probability question, but the problem statement had no information about the prior knowledge. Therefore, although the problem was very simple, it is unsolvable mathematically. Question: you test for cancer in a machine that has the following specification; if you have cancer then it may reports 95%+ve or 5%-ve. The next day you get the results that you are -ve, do you celebrate?
Find median of two sorted list
Suppose there are n lily pads located on a unit circle, and a frog initially is sitting on one of them at time = 0. Every minute this frog will make a jump to the lily pad that is next to it, either to the left or to the right with probability = 1/2. Find the expected time in minutes for this frog to visit every lily pad on the unit circle.
What is a regression graph. What is the regression graph called.
You flip a weighted coin that comes up Heads 40% of the time and Tails 60%. If you flip this coin 5 times, what is the probability that you see at least 3 Tails, rounded to the nearest percent?
statistical and programming questions
Min cost to climb the stairs (DP). I think a same problem exists on Leetcode.
A really difficult DP question, a more straightforward algorithm question about finding permutations, and a very difficult question about conditional probability and joint distributions.
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