One Gigabyte is equal to how many Megabytes?

One Gigabyte is equal to how many Megabytes?

• A. 256
• B. 1024
• C. 2048
• D. 512

Answer: (B)

Understanding how computer storage scales helps here. In memory sizes, each step up multiplies by 1024, because we use powers of two: a Kilobyte is 1024 bytes, a Megabyte is 1024 Kilobytes, and a Gigabyte is 1024 Megabytes. So a Gigabyte is 2^30 bytes, and since a Megabyte is 2^20 bytes, dividing 2^30 by 2^20 gives 2^10, which is 1024. Therefore, 1 Gigabyte equals 1024 Megabytes. The other numbers would correspond to a quarter of a gigabyte (256 MB), half a gigabyte (512 MB), or two gigabytes (2048 MB), which are not the full amount of one gigabyte.

Understanding how computer storage scales helps here. In memory sizes, each step up multiplies by 1024, because we use powers of two: a Kilobyte is 1024 bytes, a Megabyte is 1024 Kilobytes, and a Gigabyte is 1024 Megabytes. So a Gigabyte is 2^30 bytes, and since a Megabyte is 2^20 bytes, dividing 2^30 by 2^20 gives 2^10, which is 1024. Therefore, 1 Gigabyte equals 1024 Megabytes. The other numbers would correspond to a quarter of a gigabyte (256 MB), half a gigabyte (512 MB), or two gigabytes (2048 MB), which are not the full amount of one gigabyte.