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5.20 Numbers used as nouns

Use numerals when numbers are referred to as nouns:

  • Highway 3
  • Channel 3
  • Grade 4
  • Bulletin No. 40
  • Revolution No. 9
  • values of 0 and 1
  • Engine No. 9 is arriving on Track 3.
  • Air Canada Flight 67 now boarding at Gate 6.