Suppose you have two covariance matrices A and B. Is AB also a covariance matrix? Suppose that, by plain dumb luck, we also have that AB=BA. Is AB a covariance matrix under this additional condition?
Operations Research Engineer Interview Questions
17,210 operations research engineer interview questions shared by candidates
Suppose you have 100 GB of data that you want to sort, but you only have 1 GB of memory. How would you sort this data?
A clock on the wall falls and breaks into 3 pieces with the same sum of numbers. What are the three pieces?
You have two decks of cards: a 52 card deck (26 black, 26 red) and a 26 card deck (13 black, 13 red). You randomly draw two cards and win if both are the same color. Which deck would you prefer? What if the 26 card deck was randomly drawn from the 52 card deck? Which deck would you prefer then?
a deck of pokers. Three choices: A: 26 black, 26 Red; B: 13 black, 13 Red; C: random 26 card from the deck. Take the first two cards, if same color, the win $1, otherwise lose $1. Which deck is best for you if you are playing? Why? How to do simulations? How to draw the random pile of 26 cards?
Minimize the number of comparisons for finding minimum and maximum of a given set of numbers.
Recent Economic Activity - Throw some light on the facts Stock Exchange based questions Accounting principles and terms Terms related to financial statements
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.
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