H, Be, F, S, Mn, Kr, In, Gd, Tl, ?
What's the next in the series?
Solution
from A Daily Brain Teaser http://ift.tt/1m3d1SM
3d wooden brain teasers from craftypuzzles.com
What's the next in the series?
Solution
from A Daily Brain Teaser http://ift.tt/1m3d1SM
3d wooden brain teasers from craftypuzzles.com
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