Question

The lecture delivered by prof. Das


[use 's or ' where ever possible]​

Answer 1

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It was Prof. Das' lecture.

Reason:-

The noun 'Das' already ends with letter 's' so just an apostrophe is added after it which posses that the lecture was of Prof.Das

Hope it helps you

Answer 2

Hie there!! here's your answer!!

Answer:

The lecture delivered by prof. Das'

Explanation:

When indicating the possessive, if there is more than one owner add an apostrophe to the plural; if there is one owner, add 's to the singular (ex:The Smiths' car vs. Smith's car). If the possessive involves a last name ending with "s" or "z," you can add either.