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Use the Factorial Function to Calculate Pi!

September 15th, 2016 by Math Tricks | No Comments | Filed in Math Tricks

 






Check out this awesome trick!

Take your calculator – it has to have a factorial function (n!).  Punch in 0.5, and then hit the factorial key (n!).  Then hit the square function key (x2).  Then multiply the result by 4.  Do you recognize the final result?  That’s right – Pi!!

Check out this video for a demonstration and an explanation:

 

 

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Tripping Up Your Brain

September 11th, 2016 by Math Tricks | No Comments | Filed in Math Tricks

tripping-up-your-brain

 






WOW!  I have to admit that I failed on this one, so don’t feel bad if you do too!

I am not sure why this math trick works so well.  I think it might be because your brain is conditioned into a calculation mode that causes you to come up with an incorrect figure, even though you believe it to be correct.  Did you get it right, or were you fooled too?

 

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