Five Rings Captial (quant)

Five Rings Captial, quant associate
submit resume on campus


Phone 1 HR screen:
1. work me through resume, explain my work, the visa, why this company, any pending offer
2. quick math/calculation questions with timing of 15 seconds:
square root of 51, ln(514), what is the first number that has 100 digits in its factorials (n! has 100 digits, first n)
the mass of griaffe, how many bottle drinks do people in US drink

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comment:第三轮 3 和4 题 答得不好， 后来问了理论物理大神才知 可以用2维X-Y坐标 X/Y 的分布只是和他们与X轴的角度有关， 可以快速解答不需要积分
大神拿了300K的five rings captial package
他们面试到onsite 只问math，probability and stats, no coding
but they only hire 2 People this year

wenyuz 发表于 2017-11-28 14:42
what is the first number that has 100 digits in its factorials？ LZ这个怎么做啊？

大概stirling级数？ n!=sqrt(2\pi n) (n/e)^n, 然后 取对数 差不多是 nlog_10 (n) - nlog_10(e) > 100, ln 10 差不多是 2.3， 大概求 n log n - n >= 230,  差不多 70？

what is the first number that has 100 digits in its factorials？ LZ这个怎么做啊？

Is it X divided by Y or X-Y in "3. P(0<X/Y<1)" and 4.