Question: What is exchangeability in Bayesian statistics? Use an example to explain it, suppose there is a box full of red balls and blue balls, draw

What is exchangeability in Bayesian statistics? Use an example to explain it, suppose there is a box full of red balls and blue balls, draw a ball then does not put it back, then draw another ball, why is this sequence considered exchangeable? what are some other examples of exchangeable sequences?

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