Question

aflati valoarea raportului a pe b,unde a=1+2+3...+60 si b=1pe 2 x 2 pe 3 x 3 pe 4 x...x 59 pe 60

Answer 1

Vezi atasamentele! Spor la lucru! 

84596c30967ec4943250b538d31451eb.doc

c3fb2fe3fce248561a68b8b193365f89.docx

Answer 2

[tex]a=1+2+3+_{\dots}+60\\ a=\dfrac{60\cdot 61}{2}\\ a=30\cdot 61= 1830\\ \\ b=\dfrac{1}{\not 2}\cdot \dfrac{\not 2}{\not 3}\cdot \dfrac{\not 3}{\not 4}\cdot _{\dots}\cdot \dfrac{\not 59}{60}\\ b=\dfrac{1}{60}\\ \dfrac{a}{b}=\dfrac{1830}{\frac{1}{60}}}=60\cdot 1830=\boxed{109800}[/tex]