What is the factorial of 0.5 (0.5!)?

If you use Excel and enter the following formula: =FACT(0.5) the answer will be one. However, if you open a more rustic tool such as the Windows Calculator and try again, you will get 0.886226925510.

So, how can a tool such as the Windows calculator come up with the correct answer when Excel can only return 1? What about the factorial of 0.75 (0.75!)? Again, Excel returns 1 whereas the Windows calculator gets the correct answer: 0.919062526898

Read more