Question

Which of the following not a well defined collection of objects
1) The set of Natural 2) Rivers of 3) Varius kinds of
Numbers
India
Triangles
4) Five most renowned Mathematicians
of the world.​

Answer 1

A well-defined collection of distinct objects that can be agreed upon universally is called set.  

• The set of natural numbers is defined as N={1, 2, 3,..., ∞}. This definition of natural numbers is agreed upon universally. So set of natural numbers is a well-defined collection.
• Collection of rivers of India can also be defined as all the rivers flowing through the territory of India can be named as a collection of distinct objects of similar origin. This is also a well-defined collection.
• Any polygon having three sides can be called a triangle and this definition is universally accepted. So set of various triangles is a well-defined collection.
• When we talk about the most renowned mathematicians, the collection of such a set can vary as to the opinions of people. So this is not a well-defined collection.

#SPJ2

Answer 2

Answer:

4) Five most renowned Mathematicians

of the world.