Question

Which of the following collections is a set? 

Options

• Colours of the rainbow 

• Tall trees in the school campus.

• Rich people in the village

• Easy examples in the book

Answer 1

Colours of the rainbow 

Explanation:

1. Since, the colours of the rainbow are well defined such as Violet, Indigo, Blue, Green, Yellow, Orange and Red.
   So, the collection of colours of the rainbow is a set.
2. Since the tall trees in the school campus are not well defined. 
   So, the collection of the tall trees in the school campus is not a set.
3. Since, the rich people in the village is not well defined.
   So, the collection of the rich people in the village is not a set.
4. Since, the easy examples in the book is not well defined.
   So, the collection of easy examples in the book is not a set.