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.
Probability questions like minimum people to ensure 7 people have same birthday month
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
A bus pulls up to a stop. 3/4 of the people get off and 7 get on. The bus goes to two more stops with the same results. What is the smallest number of people that could've initially been on the bus?
At 12:00 the arms of a clock are completely aligned. Assuming continuous motion, at one point are they aligned again?
What is 1,000 to the 1,000th power?
What is the probability of getting an even number of heads in 7 coin tosses?
1.possibility of getting head in one flipping 2.expectation value of the sum of 8 flipping coins. Head=1, Tail=0
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