Brain teaser: Can you crack the code and find the missing number in the triangle? A popular online math puzzle involves finding a missing number in triangles by using a simple addition rule ...

Alongside the mind-boggling brain teaser, he wrote, “Can you still crack the code?” The brain teaser features a lock that can only be opened with a four-digit code.

Imagine a number lock with a three-digit code, and you're given five clues to crack it open. First, one digit is in the correct spot. Second, one digit is right, but it's in the wrong place.

This puzzle game tests mathematical skills and logical thinking as players embark on a journey to unlock a treasure hidden in an uncharted cave. The challenge involves solving a number puzzle with ...

Put your code-breaking skills to the test and see if you can beat the clock and open the safe in time. Each letter corresponds to a number, but the numbers associated with two of the letters are ...

Can they crack your code if they “intercept” your message? Extra: What if the person who intercepts your message knows about Caesar ciphers? Does that make it easier to crack the code?