Question

Calculati partea intreaga a numarului a=1/1 ori 2 +1/2 ori 3 + ... + 1/9 ori 10

Answer 1

a=(1/1-1/2) + (1/2-1/3) + (1/3-1/4) + .........+(1/9-1/10)

a=1-1/10

a=9/10

[a]=[9/10]=0