Question

Which of the following sets is not finite?

Answer 1

The following sets:

• finite
• finite
• Not finite

What is function?

An expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable)

First,

{x| x∈ N ∧ x<10} = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9} which is finite

Next,

{x| x∈ Z ∧ 0<x<10} = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9} which is finite

Last,

{x| x∈ Z ∧ x<10} = { ........,-4 ,-3 ,-2 ,-1} which is  not finite

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