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Megabytes and Kilobytes

Age 11 to 14 Short Challenge Level:

$1$ kilobyte is actually not $1000$ bytes, it is $2^{10}$ bytes.

$1$ megabyte is $2^{10}$ kilobytes.

How many bytes are there in $1$ megabyte?

This problem is adapted from the World Mathematics Championships
You can find more short problems, arranged by curriculum topic, in our short problems collection.