Count The Total Digits!

It was a lucky day that you got kidnapped to the secret lab as subject for an experiment. To get freedom, you must calculate the total digits of the result of mathematics problem. After that, you must open the correct door which has the total digits written on it to proceed. There will be also a man-eating duck which will eat you if you open the wrong door.

How to play

• Calculate the result of math problem

• Calculate the total digits of the result

Note: You need a kind of pdf reader to play it. (Recommended: Adobe Reader, Foxit Reader 7.x above, Google Chrome's built-in pdf reader)
#other