Basic Ideas of Sets

This is a collection of well-defined distinct objects.

• Elements

• Relations

• Functions

• Sets

The Objects in the sets are called _____.

• Characters

• Symbols

• Elements

• Samples

State whether the following sets is well-defined or not well-defined.

The set of honest people in the Philippines.

State whether the following sets is well-defined or not well-defined.

The set of enjoyable subjects in high school.

State whether the following sets is well-defined or not well-defined.

The set of even counting numbers less than 30.

State whether the following sets is well-defined or not well-defined.

The set of prime numbers.

State whether the following sets is well-defined or not well-defined.

The sets of all beautiful women in the Philippines.

State whether the following sets is well-defined or not well-defined.

The set of big people.

State whether the following sets is well-defined or not well-defined.

The set of all colors in the rainbow.

State whether the following sets is well-defined or not well-defined.

The set of all factors of 100.