Hi, everybody,
I was asked to find a way to display the combination of ALL four numbers: 1 5 6 7 in order to get 21 as the result.
Every number can be used only once !
All mathematical operators are welcome.
for example: 6 / (1 - 5/7) = 21
BUT... how can this formula be "found" with the help of Excel ?
Thanks for your help,
Michael