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 241 (Posted on 2011-02-02)
Solve one - get one free.

I. Crazy bank

I have not a penny in my pocket and the only money available to me is \$500, deposited in a crazy bank with some very strange rules:

a. There is no interest on money deposited.
b. There are no charges for withdrawal, but one can only draw exactly \$300,- no overdraft and no other amounts allowed.
c. There is only one specific amount of money one can deposit - \$198 to be exact, happily enough no charges for this .

Using only those operations, what is the biggest amount I can rescue from this bank?

II. Shift a token.

On a ruler, marked from 0 to 147 cm, a token is placed on one of the marked places.
You can move this token any time:
either 100cm to the right or 47 cm to the left.
Prove that after 147 permissible moves the token is at its starting point.

If I were you I would start with the token story first.

 No Solution Yet Submitted by Ady TZIDON No Rating

 Subject Author Date re: solutions broll 2011-02-02 15:39:51 Solution, Pt. 1 (using Excel) hoodat 2011-02-02 15:17:15 solutions Charlie 2011-02-02 14:40:24 possible solution part 1. broll 2011-02-02 14:27:39

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