Question

Suma a cinci nr.consecutive este880. Aflati nr.

Answer 1

880:5=176
(176-2)+(176-1)+176+(176+1)+(176+2)
174+175+176+177+178=880

Answer 2

a+b+c+d+e = 880
a) /.................../
b) /................../...2/
c) /.................../..2/...2/
d) /................../..2/...2/...2/
e) /................../..2/..2/....2/....2/
880-(2+2+2+2+2+2+2+2+2+2 )=880 - 20 =860
860 :5 =172( o parte )
a= 1 x 172=172
b=1x 172 +2=174
c=1 x 172+2+2=176
d= 1 x172 +2+2+2 =178
e = 1x 172 +2+2+2+2= 180
Verificare:a+b+c+d+e =880
172+ 174+176+178+180=880