Which of the following are sets? Justify your answer.(i)  The collection of all the months of a year beginning with the letter J.(ii) The collection of ten most talented writers of India.(iii) A team of elevens best–cricket batsmen of the world.(iv) The collection of all boys in your class.(v) The collection of all natural numbers less than 100.(vi) A collection of novels written by the writer Munshi Prem Chand.(vii) The collection of all even integers.(viii) The collection of questions in this chapter.(ix)  A collection of most dangerous animals of the world.

Explanation

To determine which of the given collections are sets, we need to analyze each one based on the definition of a set. A set is a well-defined collection of distinct objects, where the criteria for membership in the set are clear and unambiguous.

### Step-by-Step Solution:

1. **(i) The collection of all the months of a year beginning with the letter J.**
- **Analysis:** The months that start with 'J' are January and June. This collection is well-defined as it has specific elements.
- **Conclusion:** Yes, this is a set.

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