Magic Gopher Number Game

December 15, 2006Stephen Ward

When I first say this magic gopher number game, I was perplexed. No matter how randomly I chose my number, the gopher always seemed to guess correctly. After trying it a few times, it became apparent to me that there was a trick. As it turns out, you don’t have to be a math whiz to see what’s going on if you look closely. I’ve posted a spoiler for how the trick works below. See if you can figure out the gopher’s “magic” before peaking at the answer.

Spoiler:

If you run every acceptable number combination (i.e. 10-99) through the gopher’s formula, you end up with only a few possible outcomes. Specifically, you always end up with a number divisible by 9 (i.e. 0, 9, 18, 27,… all the way up to 81). If you look at the gopher’s chart, you’ll notice that the same image appears on each of those numbers. The image is randomly generated each time to give the illusion of mind-reading. Likewise, the other numbers that can never be generated from the gopher’s formula are given random images to throw you off of the pattern. Like most “magic,” this trick is simply a matter of misdirection.

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On January 29, 2007, Bill Joslin wrote the following comment:

I understand the nine principle…but the problem with that is the gopher still has to know which one of the nine it is..how do you explain that????

On March 20, 2007, Melissa wrote the following comment:

Bill - “If you look at the gopher’s chart, you’ll notice that the same image appears on each of those numbers. The image is randomly generated each time to give the illusion of mind-reading. ” So no matter which of the “nine” numbers you choose, the image is the same.

On April 16, 2007, vinay kumar wrote the following comment:

it was an easy and lucid explaination of the magic goopher. My!! it had me perplexed for awhile. All thanks to the one who worked it out.

On September 19, 2007, Michaela Leach wrote the following comment:

Oh…..Im So Glad U Figured It Out!!!!! This Thing Had Me Going 4 A While!!!! LOL

On January 31, 2008, Joe wrote the following comment:

All the nine principle numbers have the same symbols

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