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Which of the following is Natural number?(a) 3.5(b) 7(c) 0(d) -2The question was asked in an international level competition.This intriguing question originated from Number Systems Basics topic in chapter Number Systems of Mathematics – Class 9

Answer» RIGHT choice is (B) 7

For EXPLANATION I would say: Natural NUMBERS contains {1, 2, 3…}.

3.5 is not an integer, so it is not natural number.

0 and -2 are not natural numbers because they are not the part of natural numbers’ SET.


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