Write the given set in Set Builder form.
A = { $2, 3, 5, 7, 11, 13, 17, 19$ }

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Solution

In Set Builder form, the set is described by stating a condition or property which an object or element must satisfy if it belongs to that set.
Given,
A = { $2, 3, 5, 7, 11, 13, 17, 19$ }
We know that $2, 3, 5, 7, 11, 13, 17, 19$ are prime numbers. Hence, the set contains elements which are prime numbers less than 20.
Thus, the given set in Set Builder form can be written as :
A = { x | x is a prime number less than $20$ }.

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