Final answer:
There are 1,048,576 megabytes in a terabyte.
Step-by-step explanation:
To find how many megabytes are in a terabyte using the exponent rule for division, we need to determine the exponent difference between the two units. A megabyte is 2^20 bytes, and a terabyte is 2^40 bytes. To subtract the exponents, we simply subtract 20 from 40, which gives us a difference of 20. Therefore, there are 2^20 (or 1,048,576) megabytes in a terabyte.