Question

c=1×2×3.....×40. c= divizibil cu 5⁹





Va rog mult dau 30 puncte
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Answer 1

$\it Produsul\ con\c{\it t}ine:\\ \\ 5=5^1\\ \\ 10=2\cdot5^1\\ \\ 15=3\cdot5^1\\ \\ 20=4\cdot5^1\\ \\ 25=5^2\\ \\ 30=6\cdot5^1\\ \\ 35=7\cdot5^1\\ \\ 40=8\cdot5^1\\\rule{50}{0.7}\\ dup\breve a\ \hat\imath nmul\c{\it t}ire \Rightarrow 5^9$