Q. Which of the following is a natural number?Choices:(A) 25β(B) 2(C) 2β(D) Ο
Define natural numbers: Understand the definition of natural numbers.Natural numbers are the set of positive integers starting from 1. They do not include fractions, irrational numbers, or negative numbers.
Evaluate choices: Evaluate each choice to see if it fits the definition of a natural number.(A) 25β is a fraction and not an integer.
Continue evaluation: Continue evaluating the choices.(B) 2 is an integer and it is positive.
Verify if 2 is natural: Verify if 2 is a natural number.Since 2 is a positive integer and natural numbers include all positive integers starting from 1, 2 is a natural number.
Check remaining choices: Check the remaining choices for completeness.(C) 2β is an irrational number, not an integer.(D) Ο (pi) is also an irrational number, not an integer.
Conclude with 2 as natural: Conclude which choice is a natural number.From the given choices, only (B) 2 is a natural number.