4 coins you get $1 for each head .. Expected value ..
Trader Interview Questions
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From 0-100%, how well were my answers?
In Linux, find how many files there are in current folder (also in sub-folder)
I have a number in mind. The product of each digit of the number is 96, no digit 1 in this number. What's the biggest and the smallest number I could think of?
Math questions like 16^3 or multiplying numbers.
If you randomly pick a 3-digit number, what's the probability that all 3 digits are even numbers?
Questions about coins and probabilities.
15% of 37
What is 45*69?
1. mental calculate 1+3+...+99 2. coin flip problems. expectation. 3. hour hand-min hand angle.
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