Valoarea numarului 1,(1)+2,(2)+3,(3)+4,(4)+5,(5)
variantele sunt 16,(3) b)16,(4) c)16,(5) d) 16,(6) e) 16,(7)
vreau si rezolvare

1,(1)+2,(2)+3,(3)+4,(4)+5,(5)=

1,(1)=(11-1)/9=10/9 ; 2,(2)=(22-2)/9=20/9 ;3,(3)=(33-3)/9=30/9

4,(4)=(44-4)/9=40/9 ;5,(5)=(55-5)/9=50/9

1,(1)+2,(2)+3,(3)+4,(4)+5,(5) = 10/9+20/9+30/9+40/9+50/9=150/9=16,666666=16,(6)

Raspuns corect d)16,(6)

=...

=(9*1+1)/9+(9*2+2)/9+(9*3*3)/9(9*4+4)/9+(9*5+5)/9

=(10+20+30+40+50)/9=150/9= 16,(6)

⇒ raspus d)