This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.

i am sure many of you know these already, but i thought it would be fun to look at again. i have to read Alice in Wonderland for a mathematics course (real analysis). there are numerous logical and mathematical puzzles in the story... most of which seem like nonsense to the typical reader. here is a simple one - feel free to post more if you know one. Q. How can you arrange 10 cakes in 5 rows with 4 cakes in each row? [ August 19, 2003: Message edited by: Greg Harris ]

okay... here is a good one. Let me see: four times five is twelve, and four times six is thirteen, and four times seven is -- oh dear! I shall never get to twenty at that rate! that sounds like complete nonsense... but the math is actually correct! so, the question is: Q. what is 4*7 using this logic?

our instructor mentioned that book, too... but he did not require us to read it. now that you have mentioned it as well, i think i will pick it up.

Greg Harris
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well, i guess i should post the answer... i do not know how anyone came up with this (without asking lewis carroll). 4*5 = 12 (base 18) 4*6 = 13 (base 21) 4*7 = 14 (base 24)