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What is the prime factorisation of 90?
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Answer and explanation
Correct answer: (2\times3^2\times5)
Step 1: Write (90=9\times10). Step 2: (9=3^2) and (10=2\times5), so (90=2\times3^2\times5). Step 3: In the final form, all factors must be prime.
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What is the correct answer to this question?
(2\times3^2\times5)
Why is this the correct answer?
Step 1: Write (90=9\times10). Step 2: (9=3^2) and (10=2\times5), so (90=2\times3^2\times5). Step 3: In the final form, all factors must be prime.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Real Numbers. Topic: Fundamental Theorem of Arithmetic.
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