In the sequence 2, 4, 8, 16, 32, 64, 128, what is the next number?

In the sequence 2, 4, 8, 16, 32, 64, 128, what is the next number?

• A. 256
• B. 512
• C. 128
• D. 1024

Answer: (A)

Each term is found by multiplying the previous one by 2. This is a geometric sequence with a common ratio of 2. Starting from 2 and doubling successively gives 4, 8, 16, 32, 64, 128. Doubling 128 yields 256, so the next number is 256. If you continued, the sequence would go 512, then 1024, and so on.

Each term is found by multiplying the previous one by 2. This is a geometric sequence with a common ratio of 2. Starting from 2 and doubling successively gives 4, 8, 16, 32, 64, 128. Doubling 128 yields 256, so the next number is 256. If you continued, the sequence would go 512, then 1024, and so on.