during the second interview : give a 95% confidence interval of the number of riders that have taken Tokyo's metro since its construction!! if someone takes the metro two time a days he would count 2*number of day * .... No paper, no pen and not internet allowed
Probability questions like minimum people to ensure 7 people have same birthday month
throw a fair die with 6 faces, the expected number of times until 2 consecutive 6 come out
4 mental math questions. Stuff like 37 times 37. How many 27-cent stamps can you buy with $10, etc. Then he asked how confident (in a probability) I was that I got them all right, how confident I was I got the hardest one right, and how confident I was I got at least one wrong. After, he asked me a coin problem: What is the probability you get exactly 2 heads in 4 flips of a coin.
What is the sum of all even numbers 0-100?
Amount you would pay for an optional reroll of a die, given that you would get the number of pips on the die as payment.
You have two bowling balls of the same density. One has a radius of 8 and a weight of 16; the other has a radius of 12. What is its weight?
If you have $10 and each mint costs 27 cents, how many mints can you buy?
What is the probability of getting an even number of heads in 7 coin tosses?
Sum all odd numbers from 1 to 2n + 1.
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