Re: Mind Reader. Good For Kids, Too.
OK, Here's how it works. If you do the math exercise on all the two digit numbers from 10 to 99, you only get 9 possible answers. The symbol for these numbers is all the same. When you click on "Try It Again", the symbol changes, but is still the same for these 9. It can't be wrong if you do the math right. After finally figuring it out, my comment is "DUH". Simple trick, but very effective. I don't know who sits around making these things up, but they're entertaining.