These math puzzles test your brain and critical-thinking ... determining the pattern behind the numbers shown. Answer: 1 and 4. They're arranged in groups of two-digit numbers, all ending in ...

A carne asada surprise, McDonald’s plant-based nuggets and a new NASA probe are just a few of the topics to test your recall in this week’s News Quiz.

Jovan built these five houses of cards using a total of exactly 90 playing cards. Now he wants to build one large house consisting of exactly 100 cards. Can such a house of cards exist? The number ...

Welcome to our free daily crossword puzzles. Follow the clues and attempt to fill in all the puzzle’s squares. Check back each day for a new puzzle or explore ones we recently published.

A: Students will be able to view grades after they have been rolled to academic history. That process should be complete by 8:00 a.m. the morning after the grade entry deadline. A: To print a copy of ...

That’s the subject of Alex Bellos’ new book Think Twice, which has page after page of questions designed to deceive. Alex sets Tim Harford some of his favourite puzzles.

Designed to be more challenging throughout the week, you can test your knowledge with five puzzles each week: Monday, Tuesday, Wednesday, Thursday and Sunday. Bookmark this page and play now!

Prolific puzzle inventor Henry Ernest Dudeney published the following problem in his 1917 book Amusements in Mathematics.The current version of the U.K.’s Union Jack flag was introduced in 1801.

Puzzles can take many forms, whether it be about shapes, instructions, physics, and/or portals. As time passes, the best puzzle co-op games will continue to evolve and grow. Updated on September ...

Happy birthday America! From the signing of the Declaration of Independence on July 4, 1776, to picnics, parades, and fireworks, take a patriotic tour through the collections and reflect upon the ...