• TheRedSpade@lemmy.world
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      8 hours ago

      A number followed by an exclamation point means multiplying it by each whole number below it until one.

      3! = 3*2*1 = 6
      5! = 5*4*3*2*1 = 120
      10! = 10*9*8*7*6*5*4*3*2*1 = 3,628,800

      3,628,800 seconds / 60 = 60,480 minutes
      1008 hours
      42 days
      6 weeks

      • wewbull@feddit.uk
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        7 hours ago

        6 Weeks * 7 days * 8 * 3 (24) hours * 2 * 4 * 5 * 9 * 10 (3600 = 60²) seconds

        The last one is a bit of a jump, but 9 * 4 is 36 and 10 * 5 * 2 is 100 so together it’s 3600.

    • Björn@swg-empire.de
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      8 hours ago

      10! means ten factorial. So 10 * 9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1.

      It’s a common math joke.