Difficulty Level: Easy
Stats: 2,130 / 3,497 ( 60.91% ) got this right

A gear with 6 cogs is meshed with a larger gear of 14 cogs. When the smaller gear has made 21 revolutions, the number of revolutions made by the larger wheel is:

  • 1
  • 2
  • 5
  • 9
  • 11
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