Dr. Chen's puzzle presents a series of numbers that appear to follow a specific pattern. However, one crucial number is missing, and identifying it requires a keen understanding of mathematical ...

Brain teasers are a fun way to test one's thinking skills. These puzzles give the brain a quick workout. A recent challenge ...

Filling in the missing number requires determining the pattern of how the numbers are related to each other and following it through. Can you figure out what the missing number is?

The missing number isn’t obvious, and only the most perceptive minds will spot the hidden pattern. Think you’ve got what it takes to crack the code?

Test your brainpower with this challenging puzzle! Find the missing number in a sequence from 1 to 53 in just 11 seconds and prove your 140+ IQ level.