It's an easy-looking grade school equation but can you remember the golden rule to get the answer in 30 seconds?
- Posted on March 1, 2026
- By Daily Mail
- 5 Views
It's an easy-looking grade school equation but can you remember the golden rule to get the answer in 30 seconds?

Are your arithmetic skills from grade school still intact? Test them out with this sum that has left internet users baffled.