• AeroLemming@lemm.ee
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    1 year ago

    I got 38x with 117 billion total people. Not sure where OC got their number, but it’s kind of in the ballpark, so maybe it was just shitty mental math.

    • Match!!@pawb.social
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      1 year ago

      getting correct within a factor of 2 after a 42-fold exponentiation would be amazingly good mental math

      • AeroLemming@lemm.ee
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        1 year ago

        The easiest way would be to say 117 billion is ~2^37 because 2[1] are 128, 1024, and about a million (1024*1024), so multiplying those all together gives a little over 128 billion, which is pretty close to 117 billion. So, 242/237=2^5=32. Pretty close, all mental math. Granted, it does require you to either memorize or compute powers of 2 up to 10.


        1. 7, 10, 20 ↩︎