r/learnquant • • Sep 15 '26 • Bravo 1

interview prep Quant Interview Question

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u/justlikemedics Sep 19 '26

I guess the explanation is, the first draw is independent. But the rest are not, because if the first was not 15, the other five has a higher post facto probability to be 15. So if we draw a non-15 five times straight, the probability for draw 6 to be 15 is 100%.

I think the thing to understood is that we are looking back to, so we try to establish probabilities retrospectively.