Question: Which number should come next in the series: 2, 4, 8, 16, ...?

Options:

1. 20
2. 24
3. 32
4. 36

Correct Answer: 32

Solution:

The series is doubling each time: 2*2=4, 4*2=8, 8*2=16, so the next is 16*2=32.