Answer :

We know that a set is a collection of things that have something in common or follow a rule. Set notation uses brace {} with elements separated by commas.

(i) Collection of all months of a year beginning with the letter “J” = {January, June, July}

∴ This is a set.

(ii) Collection of ten most talented writers in India cannot be accurately defined.

∴ This is not a set.

(iii) Team of eleven best cricket batsmen of the world cannot be accurately defined.

∴ This is not a set.

(iv)Collection of boys in class = {Rohan, Sushant, Mohan, Rehan}

∴ This is a set.

(v) Collection of all even integers = {… -4, -2, 0, 2, 4, …}

∴ This is a set.

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