(FOX NEWS)- In recent years, parents have expressed some frustration over Common Core math problems.
Now a North Carolina parent's Facebook post is going viral, as adults react with consternation to a new brain-teaser.
The letter-number puzzle above comes from a first-grade student's homework packet:
"Internet friends: solve this 1st grade math homework," the Holderness family wrote, adding "#showyourwork #mybrainhurts."
