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Which is the correct prime factorisation of (84)?
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Answer and explanation
Correct answer: (2^2 \times 3 \times 7)
Step 1: Write (84) as (4 \times 21). Step 2: Since (4=2^2) and (21=3 \times 7), (84=2^2 \times 3 \times 7). Step 3: In exams, multiply back to verify the original number.
Frequently asked questions
What is the correct answer to this question?
(2^2 \times 3 \times 7)
Why is this the correct answer?
Step 1: Write (84) as (4 \times 21). Step 2: Since (4=2^2) and (21=3 \times 7), (84=2^2 \times 3 \times 7). Step 3: In exams, multiply back to verify the original 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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