Class 9th math 3.1 solution english PCTB

Question 2: Write each of the following sets in tabular forms:

\((iii) \; \) \(\{x\mid x\in P\land x< 12\}\)

Solution:

Tabular Form:

\(\{2, 3, 5, 7, 11\}\)


Explanation:

\(x\in P\) means that \(x\) is a prime number and further \(x\) is less than \(12\).”

So, the set includes only those prime numbers from the set of natural numbers that are less than 12.

Prime Numbers: Prime numbers are those numbers that are divisible only by \(1\) and themselves, and they must be greater than \(1\).

Examples: \(2,3,5,7,11,13, \ldots\)

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