Answer: 42.5 (Subtract 36 from 49, divide the answer by two. Add that number to 36 to get the answer). Answer: 888 + 88 + 8 + 8 + 8 = 1,000. What number do you get if you multiply all the numbers on a ...

Social media isn’t just for catching up on your friends’ lives, liking every single photo of your cousin’s new puppy or casually seeing what your ex is up to. It’s also a place where tricky brain ...

If you've got the time, we've got the riddle. And it's time for a riddle about time: How many numbers are on a clock?

London Bridge isn't falling down—it's taking center stage in this viral riddle. Can you solve the "I met a man on the London Bridge" riddle? Have you heard of the “I met a man on the London Bridge” ...

Millions of people have been left stumped by a riddle which '98 per cent of Harvard students' get wrong but most kindergartners can solve. Isabella Avila, 24, took to YouTube to share what has been ...

The alphabet song won't help you in the case of this viral riddle Social media’s newest brain game has a ton of people stumped. So stumped, in fact, that the riddle has gone viral. People are ...

Calling all Sherlock Holmes! Put your detective skills to the test with this challenging detective brain teaser. Solve this mystery riddle and prove you've got the sharpest eye when it comes to ...

This past summer, the pharmaceutical giant launched InnoCentive.com, a Web site where scientists from Big Pharma and start-up biotechs post problems for outside researchers to solve. Companies signed ...