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What is the correct prime factorisation of (225)?
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Answer and explanation
Correct answer: (3^2 \times 5^2)
Step 1: (225=15 \times 15). Step 2: Since (15=3 \times 5), (225=3^2 \times 5^2). Step 3: (15^2) shows the value, but it is not prime factorisation because (15) is not prime.
Frequently asked questions
What is the correct answer to this question?
(3^2 \times 5^2)
Why is this the correct answer?
Step 1: (225=15 \times 15). Step 2: Since (15=3 \times 5), (225=3^2 \times 5^2). Step 3: (15^2) shows the value, but it is not prime factorisation because (15) is not 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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