Question

afla jumatatea apoi noimea numerelor:9,18,36,54,63,72,90,900,1800,3600.

Answer 1

9:2=4,5  9:9=1
18:2=9   18:9=2
36:2=18  36:9=4
54:2=27   54:9=6
63:2=31,5
72:2=36    72:9=8
90:2=45    90:9=10
900:2=450   900:9=100
1800:2=900    1800:9=200
3600:2=1800    3600:9=400