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Animals Spirits is the colourful name that Keynes gave to one of the essential ingredients of economic prosperity: confidence. According to Keynes, animal spirits are a particular sort of confidence, “naive optimism”. He meant this [...]

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The function f(A, B) is a function of two positive integers A and B. It is known that f(1, 0) = f(0, 1), that f(0, k) = k + 1 (for natural number k) and that f(A, B) = f(A − 1, f(A, B − 1)). What is the value of f(1, 1500)?

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