Răspuns:
/...../..../..../..../...../..../..../..../...../..../
1zi=/..../.../2/10
2zi=/..../..../.../1/10+2/10=3/10
3zi=/.../...../..../(2/10+3/10)-2/10=3/10
4zi=/..../(2/10-1/10)=1/10
2/10+3/10+3/10+1/10=9/10
deci in a cincea zi a mar ramas de citit o zecime
10/10-9/10=1/10
Explicație pas cu pas: