trial and error 

To do something by trial and error means to brute force it. Just mindlessly trying different combinations of something until you get the right result.

-Hey man! I am such an awesome hacker, I cracked the password on your box!
-Nah, you just brute forced it

trial and error by Aphex May 13, 2004

trial and error questions 

The most annoying, stupid, evil, most cruel math questions created by a demon in hell to make you need to guess and guess and guess again and takes up all of your time when you could solve other math problems.

Those polynomial trial and error questions are soooo wickedly vile and they need to cease existing.

trial and error questions by CrazyB0Z0 May 15, 2019