However, to get to her house you must cross seven bridges. At each bridge is a troll who demands ½ of all of your cakes as the price to pass. However, this troll, being a nice troll, feels bad and gives you back 1 of the cakes that he took.
The puzzle to solve: How many cakes must you leave with to be able to give your grandmother 2 cakes
The puzzle to solve: How many cakes must you leave with to be able to give your grandmother 2 cakes
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2 Do the math and you will see that this puzzle is based on the fact that ½(2)= 1 and 1 + 1 = 2
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2, or at least, that is the smallest number you can take.
Since 1/2 of 2 is 1, so he steals one. Then he gives it back. So your two cakes go through unscathed.
Since 1/2 of 2 is 1, so he steals one. Then he gives it back. So your two cakes go through unscathed.