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1, 2, 4, 8, 16, 32, 64, 128, 256, 489 in 10 bags (Total 1,000)6 L- Q" R- i; [% y/ \1 z) j
For 3, take bag 1 & 2
' b9 X+ }5 I+ U. j  }' Y' i8 G9 \公仔箱論壇For 12, take bag 3 & 4
' z- |' l3 U+ r% p+ l公仔箱論壇So any nos. within 1,000 can be made by these 10 bags combination.