December Mindbenders
How the years fly!
"I'll be 12 in just two days," said Adam to everyone else at a party.
"That's nice," said someone else. "Happy birthday for Saturday," said a few other people.
"Thank you," said Adam. "And believe it or not, last year I was only 9!"
What date is it?
Number Puzzle
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What number should be at the top of the tree?
Coin Puzzle
Arrange the coins in a regular hexagon in as few moves as possible.
(A move means sliding a coin to touch at least two other coins.)
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