M by N matrix of lightbulbs&switches, interior switch each controls 9 lightbulbs, edge ones control 6, corner ones control 4. How many turns do you need to light up all bulbs?
Technology Research Analyst Interview Questions
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Flip the coins, the expected time to get HHT
1) Tow coins, P(head)=1/3, P(tail)=2/3, design a way to get the effect of fair coin
basics of fermentation
2) A. 10 ropes, each one has one red end and one blue end. Each time, take out a red and a blue end, make them together. Repeat 10 times. The expectation of the number of loops. B. 10 ropes, no color. All the other remains the same.
Rederive the MLE estimate for the weights with RMSE loss for linear regression.
Do you know Bezout's theorem?
Write a function to append two lists in OCaml.
Why add l2 penalty to linear regression.
Throw a fair die 100 times, what is the probability that you will get more than 75 tails?
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