Which prime factor is not included in (315)?
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Answer and explanation
Correct answer: 2
Step 1: Write (315=9 \times 35). Step 2: (9=3^2) and (35=5 \times 7), so (315=3^2 \times 5 \times 7). It does not include (2). Step 3: A prime not appearing in the factorisation is not a prime factor of the number.
Frequently asked questions
What is the correct answer to this question?
2
Why is this the correct answer?
Step 1: Write (315=9 \times 35). Step 2: (9=3^2) and (35=5 \times 7), so (315=3^2 \times 5 \times 7). It does not include (2). Step 3: A prime not appearing in the factorisation is not a prime factor of the number.
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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