Saturday, 6 September 2014

mathematics - Make 6 5 4 3 = 81


Can you find a way to make:



6 5 4 3 = 81



by concatenation and/or adding any of (and only) these mathematical operators:



  • +

  • -


  • ×

  • !

  • ÷

  • ^

  • standard parentheses ()


You cannot add other numbers to the equation, or re-order the existing numbers.
The result must be a mathematical equality.


Harder version...


Try to do it while only altering the left hand side!





Inspired by Make 5 5 5 5 = 19


Hopefully somewhat more challenging than my previous attempt (may be hard not to be!)



Answer



I thought a bit too much but I finally got it:



$\frac{6+5!*4}{3!}=81$



No comments:

Post a Comment

Understanding Stagnation point in pitot fluid

What is stagnation point in fluid mechanics. At the open end of the pitot tube the velocity of the fluid becomes zero.But that should result...