system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does my coupon say "Cash value 1/20 of one cent?"

Could I take 20 coupons to McDonalds and receive a penny?

Why do they do this, while some other coupons are redeemable for exactly zero dollars?

Did McDonalds have to pay the US Government one cent for every 20 coupons they printed?
gpt
In some jurisdictions, coupons are considered food stamps. In these jurisdictions, the food stamp must have a redeemable value greater than 0. Most manufacturers are lazy and print a common coupon so they all have the little bit on there, even in places where they don't have to. 

Yes you can technically take 20 coupons to McDonalds for a penny. Don't know why you would. McDonalds didn't pay the government for use of the coupons.