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If A = {x : x ∈ N, x is a factor of 16, and x is not even}, what is A?

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Answer and explanation

Correct answer: {1}

The positive natural-number factors of 16 are 1, 2, 4, 8, and 16. The additional condition says that x must not be even, so all even factors are removed. Among these factors, only 1 is odd. Hence the set contains exactly one element: A = {1}. Therefore option A is the unambiguous correct answer.

Tags

setsset_builder_formfactorsodd_even_numbersThe Empty SetFinite and Infinite SetsEqual Setsthe empty set finite and infinite sets equal setsMathematicsClass 10 MCQ

Frequently asked questions

What is the correct answer to this question?

{1}

Why is this the correct answer?

The positive natural-number factors of 16 are 1, 2, 4, 8, and 16. The additional condition says that x must not be even, so all even factors are removed. Among these factors, only 1 is odd. Hence the set contains exactly one element: A = {1}. Therefore option A is the unambiguous correct answer.

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Sets. Topic: The Empty Set, Finite and Infinite Sets, Equal Sets.

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