(i was reasoning maybe 4 MB because 2^20 can be replaced with 1 MB * 4 bits but i wasn't really sure about this).
Answers:
Well...
2^2 * 2^20 = 2^22 = 4194304 bits.
There's 8 (2^3) bits in a byte so...
2^22 bits = 2^19 bytes. There's 1024 (2^10) bytes in a kilobyte (kb) so...
2^19 bytes = 2^9 kilobytes.
I get 512 KB
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