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If (a=2^5\times3\times7^2) and (b=2^3\times3^2\times5\times7), which prime factors will appear in their HCF?
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Answer and explanation
Correct answer: (2), (3), (7)
Step 1: HCF contains only primes present in both numbers. Step 2: (2), (3), and (7) are common, but (5) appears only in the second number. Step 3: First identify common primes, then choose their smaller powers.
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What is the correct answer to this question?
(2), (3), (7)
Why is this the correct answer?
Step 1: HCF contains only primes present in both numbers. Step 2: (2), (3), and (7) are common, but (5) appears only in the second number. Step 3: First identify common primes, then choose their smaller powers.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Real Numbers. Topic: HCF and LCM using prime factorisation.
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