Monday, March 31, 2008

A Mental Exercise

This mental exercise comes from my dad's old book (which somehow fell into my possession a few years ago), Brain Puzzler's Delight. Before I was married, I would solve one or two problems from this book a night, and then mark each successfully completed problem with the date. The problems get harder as they go along. I would say I've solved about 75% of the problems thus far. I am taking this from the Easy portion of the book. It will give you an idea of just how not easy the rest of the puzzles in this book are! Good luck!

(i) = (ii) = (iii) = (iv)

(i) - - (on the decimal scale)
(ii) - - - - - - (on the scale of ?)
(iii) - - (on the scale of 6)
(iv) - - multiplied by - - - - - (in prime factors, both on the same scale)

Find all the missing digits.

Oh, and for the record, I solved this one a couple of days ago. :-) Trust me, it's not NEARLY as tough as it seems.

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2 have poured out their souls in electronic text:

  • Alan

    So that's where my book went! ;-) My mind has been wasting away from lack of exercise! So.... this probably isn't the answer they're looking for... but

    0 base ten = 00 base anything = 000 base 6 = 0 x anything.

  • Harmony

    Lol. You're silly. Of course zero isn't the answer! :-P

    The first time I picked up that book was sometime when we still lived in north Charlotte. It's been in my possession ever since. That's been at least 14 years, and the last date you marked on a solution was sometime in the 1970's. ;-)