If (90=2\times3^b\times5), what is the value of (b)?

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Answer and explanation

Correct answer: 2

Step 1: The prime factorisation of 90 is (2\times3^2\times5). Step 2: In the given form, the power of 3 is (b). Step 3: Comparing gives (b=2).

What is the correct answer to this question?

2

Why is this the correct answer?

Step 1: The prime factorisation of 90 is (2\times3^2\times5). Step 2: In the given form, the power of 3 is (b). Step 3: Comparing gives (b=2).

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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