clear my simple confusion on singular and plural

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my question is simple

singular denotes one

plural denotes more than one (many)

how can we denote the quantity "one or many"

how can we denote this precisely in english?

i want a precise answer with relevant links to online references for eg wikipedia etc

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Greetings! It would be my pleasure to work with you on this project! My highest reviews in the field of academic, report, technical and dissertation writing on this website speaks about my credibility. I would love to Lagi

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Hi, only for $5, I can give you a detailed analysis of the question. But I need the amount paid in advance.

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