3) Poker. 26 red, 26 black. Take one every time, you can choose to guess whether it’s red. You have only one chance. If you are right, you get 1 dollar. What’s the strategy? And what’s the expected earn?
Summer Research Intern Interview Questions
12,920 summer research intern interview questions shared by candidates
a family have 2 kids. if you have seen 1 girl , what is the proberbl the other kids is a boy
25 hourses. Race them in a group of 5. Find the minimum number of race you need to conduct to find the top 3 hourses.
Brain Teaser: A snail goes up 3 feet during the day and falls 1 foot at night. How long does it take him to go up 10 feet?
I have a 12 sided die and you have a 20 sided die. We each get two rolls and we can each chose to stop rolling on either one of the rolls, taking the number on that roll. Whoever has the higher number wins, with the tie going to the person with the 12 sided die. What is the probability that the person with the 20 sided die wins this game?
1) Tow coins, P(head)=1/3, P(tail)=2/3, design a way to get the effect of fair coin
There are two stocks with the same expected value, with variance 0.3 and 0.2 and correlation 0.5. What proportion of each stock do you invest in to yield a minimum risk portfolio?
If two random variables have a uniform probability distribution between 0 and 1, what is the probability that their product is less than 0.5?
You have 100 quarters, 10 heads, 90 tails up in a dark room where you can't see the quarters. How do you divide them into 2 piles where you have an even amount of heads in each pile?
2nd ques- add if the numbers are of any base ..
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