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Subjects
Class 10MathematicsReal NumbersPrime FactorisationMediumLevel 11

Which prime factorisation represents an even number?

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Answer and explanation

Correct answer: (2^2 \times 3 \times 5)

Step 1: An even number must have (2) as a prime factor. Step 2: Only the third option contains (2), so it represents an even number. Step 3: To check evenness, calculating the whole number is not necessary.

Tags

real-numberseven-numberprime-factorisation

Frequently asked questions

What is the correct answer to this question?

(2^2 \times 3 \times 5)

Why is this the correct answer?

Step 1: An even number must have (2) as a prime factor. Step 2: Only the third option contains (2), so it represents an even number. Step 3: To check evenness, calculating the whole number is not necessary.

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Real Numbers. Topic: Prime Factorisation.

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