Question

54-53+52-51+50-49....+4-3+2-1,sa se calculeze.

Answer 1

putem sa scriem suma asa (54-53)+(52-51)+(50-49)+...+(4-3)+(2-1)
in total avem 54/2 paranteze=27 paranteze
fiecare paranteza da 1=>S=1*27=27

Answer 2

putem sa scriem suma asa (54-53)+(52-51)+(50-49)+...+(4-3)+(2-1)
in total avem 54/2 paranteze=27 paranteze
fiecare paranteza da 1=>S=1*27=27