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va rog urgent dau coroana va rog ex2

Va Rog Urgent Dau Coroana Va Rog Ex2 class=

Răspuns :

a)a1=5,a100=203 

S100=[tex] \frac{(5+203)100}{2} =10400[/tex]

b)a1=3,a100=201

S100=[tex] \frac{(5+201)100}{2} =10300[/tex]

c)a1=4,a100=499

S100=[tex] \frac{(5+499)100}{2} =25200[/tex]

Vezi imaginea BOGDANOVICI