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If (40=2^3\times5) and (60=2^2\times3\times5), what is their HCF?
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Answer and explanation
Correct answer: 20
Step 1: The common prime factors are 2 and 5. Step 2: The smaller powers are (2^2) and (5^1), so HCF is (4\times5=20). Step 3: For HCF, take smaller powers of common factors only.
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What is the correct answer to this question?
20
Why is this the correct answer?
Step 1: The common prime factors are 2 and 5. Step 2: The smaller powers are (2^2) and (5^1), so HCF is (4\times5=20). Step 3: For HCF, take smaller powers of common factors only.
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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