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What is the prime factorisation of (90)?
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Answer and explanation
Correct answer: (2 \times 3^2 \times 5)
Step 1: Write (90=9 \times 10). Step 2: (9=3^2) and (10=2 \times 5), so (90=2 \times 3^2 \times 5). Step 3: Splitting into easy parts like (9) and (10) is quick.
Frequently asked questions
What is the correct answer to this question?
(2 \times 3^2 \times 5)
Why is this the correct answer?
Step 1: Write (90=9 \times 10). Step 2: (9=3^2) and (10=2 \times 5), so (90=2 \times 3^2 \times 5). Step 3: Splitting into easy parts like (9) and (10) is quick.
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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