Notam:
a= pb. rezolvate prima zi
b = pb. rezolvate a 2-a zi
c = pb. rezolvate a 3-a zi
a+b+c = 56
a |___|
b |___|___|
c |___|___|___|___|
avem 7 segmente egale = 56
Aflam cate probleme a rezolvat in prima zi
56:7 = 8 ( probleme)
Aflam cate probleme a rezolvat a 2-a zi
2×8 = 16 ( probleme)
Aflam cate probleme a rezolvat a 3-a zi
4×8 = 32 ( probleme)
Verificare:
8+16+32 = 56