Am about to produce a series of videos on the same subject, but unrelated. Is it "#1 of a series" or "#1 in a series"? Or am I just over thinking this.

  • 1
    Do you intend to have "#1" read as "number 1" or "first"?
    – Catija
    Commented Aug 5, 2016 at 16:23
  • 1
    Neither. Just ditch the #1 and say the first of/in a series. @Catija, I can't really bring myself to read #1 as "first".
    – Phil Sweet
    Commented Aug 5, 2016 at 16:57
  • @PhilSweet I can't either... I asked because I agree that "first" is significantly better and I am having issues dealing with the #1.
    – Catija
    Commented Aug 5, 2016 at 16:58

1 Answer 1


You might be over-thinking it. That said, I think I prefer the "#1 in a series" more than "#1 of a series". I would be more likely to use "#1 of..." when followed by a specific number, such as: "#1 of 5", whereas I would be less likely to use "#1 in 5".

"#1 in...", using in followed by an abstract quantity/collective sounds better to me, but that may just be my subjective opinion. For example: "#1 in (a) line" compared to "#1 of (a) line" or "#1 in a collection" or "#1 of a collection".

Also, the of gives it the feeling that it is a ranking or score rather than a position in a series.

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