Răspuns :
a |-----|
b |-----|-----|
c |-----|-----|-----|-----| } 63.
63 : 7 = 9 (a)
9 × 2 = 18 (b)
18 × 2 = 36 (c)
Proba : 9 + 18 + 36 = 63.
b |-----|-----|
c |-----|-----|-----|-----| } 63.
63 : 7 = 9 (a)
9 × 2 = 18 (b)
18 × 2 = 36 (c)
Proba : 9 + 18 + 36 = 63.