Many people get stuck on this brain teaser at first glance:
2, 4, 8, ___, 32
The answer is 16.
Why? Because each number is doubled:
2 × 2 = 4
4 × 2 = 8
8 × 2 = 16
16 × 2 = 32
So the missing number in the gap is 16.
This puzzle looks simple, but it is a great reminder that sometimes the answer is hidden in the pattern. Once you notice the numbers are multiplying by 2 each time, the solution becomes clear.