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Which prime factorisation will form an odd number?
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Answer and explanation
Correct answer: (3^2 \times 5 \times 7)
Step 1: An odd number does not have (2) as a prime factor. Step 2: The third option has (3,5,7) and no (2), so it forms an odd number. Step 3: If (2) appears, the number is even.
Frequently asked questions
What is the correct answer to this question?
(3^2 \times 5 \times 7)
Why is this the correct answer?
Step 1: An odd number does not have (2) as a prime factor. Step 2: The third option has (3,5,7) and no (2), so it forms an odd number. Step 3: If (2) appears, the number is even.
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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