Question

Suma a 5 numere naturale consecutive pare este cu 10 mai mica decat produsul primelor 5 numere naturale nenulen Cele 5 numere sunt.

Answer 1

1×2×3×4×5=120
120-10=110 suma nr.
a|----|
b|----|+2
c|----|+4 } 110
d|----|+6
e|----|+8
110-20=90
90:5=18
a=18
b=18+2=20
c=18+4=22
d=18+6=24
e=18+8=26

Answer 2

Notam cel  mai mic numar cu x .
x+x+2+x+4+x+6+x+8=5x+20=1*2*3*4*5-10=110
5x=90
x=18 
x+2=20
x+4=22
x+6=24
x+8=26