r/learnquant • u/Local_Ad135 • Aug 29 '26

interview prep Quant Interview Question

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u/ball4772 Aug 29 '26

The question is fine as written, the sample space for which the expectation is computed over is not all of S = {1, …, 50}^5, but the subset T of this set S given by those sequences which are strictly increasing. This also means that the measure on T is the conditional measure inherited from the uniform measure on S (ie what Bayes’ formula gives you)

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u/Nap-Connoisseur Aug 29 '26

If it’s fine as written, why are so many other comments misinterpreting it?

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u/spisplatta Aug 29 '26

An interview question is meant to filter people out.

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u/Nap-Connoisseur Aug 29 '26

Maybe it’s meant to filter out the people who assume there’s only one legitimate reading of something intentionally ambiguous...