The riddle stumped all four contestants on the "Road to Olympia" competition.

Test your intelligence by solving this riddle from the "Road to Olympia" program.

In the "Road to Olympia" competition, a 30-point question in the final round stumped contestant Nguyen Nghia with the following content: "Hung wants to find any month according to the Gregorian calendar where the first and last days of the month have the same day of the week. What kind of months does Hung need to find to ensure that this condition is met?"

Nguyen Nghia gave the answer: February in non-leap years. This answer was incorrect, so the remaining contestants had the right to answer. Viet Thai gave the answer: months with 29 days. However, this answer was also incorrect, and the other contestants did not provide an answer.

Not everyone can find the answer to this "Road to Olympia" question.

If you find the answer to this riddle, scroll down to the comments to write it down and see how many people think the same way as you.

Lam Hoang

Source: https://vtcnews.vn/cau-do-lam-kho-ca-4-thi-sinh-duong-len-dinh-olympia-ar933762.html