AppliedNumeric answer
What is the expected number of fair coin flips to see two heads in a row?
Answer with a number. Fractions, powers and expressions like 23/6 or C(52,5) are read correctly in practice.
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The answer, the full working and the one idea to take away – for this and all 1,322 questions in the bank. Answer it in practice and your working is marked, with a known mistake named when you make one.
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Dynamic programming, and why it is the same as an EV recursion
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