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Which is the correct prime factorisation of (210)?
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Answer and explanation
Correct answer: (2 \times 3 \times 5 \times 7)
Step 1: Write (210) as (21 \times 10). Step 2: (21=3 \times 7) and (10=2 \times 5), so (210=2 \times 3 \times 5 \times 7). Step 3: After factorisation, check that every base is prime.
Frequently asked questions
What is the correct answer to this question?
(2 \times 3 \times 5 \times 7)
Why is this the correct answer?
Step 1: Write (210) as (21 \times 10). Step 2: (21=3 \times 7) and (10=2 \times 5), so (210=2 \times 3 \times 5 \times 7). Step 3: After factorisation, check that every base is prime.
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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