Tag Archives: puzzles

Your questions answered #2

Posted on June 19, 2011 by admin| |

Question: What is one number that’s divisible by everything? and Question: What number is divisible by all 9 numbers 1 to 9? Read more »

31 secrets. How to live a happy life with no regrets

Posted on June 5, 2011 by admin| |

1. Keep your thoughts positive, because your thoughts become your words.
2. Keep your words positive, because your words become your behavior. Read more »

How do we know the earth is rotating, and it is not the stars moving around the earth

Posted on May 30, 2011 by admin| |

How can you tell that the earth is rotating about an axis, and that the stars aren’t instead just moving around the earth? Read more »

What is a quick way to add the numbers from 1 to 10, and how does it work?

Posted on May 26, 2011 by admin| |

You can add the integers from 1 to 10 by hand, but what if you need to add from 1 to 1000? The shortcut for adding Read more »

Are all three digit numbers divisible by eleven and other questions

Posted on May 17, 2011 by admin| |

For example one searcher wonders if all three digit numbers are divisible by eleven. The answer is Read more »

How to open a Master combination lock without the combo

Posted on May 15, 2011 by admin| |

So if you must open a locked Master combination lock then take an inspiration from MacGyver Read more »

How can you quickly tell if a number is divisible by 3 and why this trick works

Posted on April 27, 2011 by admin| |

So is 151515151515151515 divisible by 3? I can quickly tell you yes. The trick is to Read more »

It is a matter of life and death. The true story of how to get rid of ghosts from a haunted house.

Posted on March 17, 2011 by admin| |

Even if you don’t believe in ghosts, read this story, or skip to the end. You may save someones life. Truly. Read more »

Why anecdotal evidence is important

Posted on February 23, 2011 by admin| |

The most important statement a scientist can make is “Huh, that doesn’t make sense. That shouldn’t have happened.” It is a sign post that new understanding and maybe even pushing the frontiers of science lies ahead. Read more »

How to win the lottery more than once

Posted on February 4, 2011 by admin| |

The trick itself is ridiculously simple. (Srivastava would later teach it to his 8-year-old daughter.) Each ticket contained eight tic-tac-toe boards, and each space on those boards—72 in all—contained an exposed number Read more »