Răspuns :
a/.........../
b/......../........./............/
c /...../....../........./........./.........../........../ }120
120 : 10 = 12 a
12 × 3 = 36 b
12 × 6 = 72 c
b/......../........./............/
c /...../....../........./........./.........../........../ }120
120 : 10 = 12 a
12 × 3 = 36 b
12 × 6 = 72 c