Give an example of a well-defined set (using description) that cannot be written using the roster method. Explain why it cannot.
Many sets can be expressed using roster notation.
For example, the set {elements in water} has {hydrogen, oxygen} as its roster notation. The set {positive multiples of 3 that are less than 20} is {3, 6 ,9, 12, 15, 18} in roster form. Even many infinite sets can be expressed in roster form with the help of ellipsis. For example, the set {whole numbers larger than 9} has {10, 11, 12, 13, ... } as its roster notation.
But not every set can be expressed in roster notation.
Give an example of a well-defined set (using description) that cannot be written using the roster method. Explain why it cannot.
According to the given information it is required to give an example of well-defined set that cannot be written using the roster method.
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