Identify the pattern: 1, 1, 2, 3, 5, 8. What is the next number?

D. 13

In the series 2, 4, 8, 16, what is the next number?

B. 32

What letter comes before 'M' if we follow the pattern of moving two letters back in the alphabet?

B. L

Find the missing number in the series: 5, 10, 20, ?, 80

B. 40

In the series 2, 4, 8, 16, what is the next number?

C. 32