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If (840=2^3\times 3\times 5\times 7) and (1260=2^2\times 3^2\times 5\times 7), what is their LCM?
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Answer and explanation
Correct answer: (2520)
Step 1: For LCM, take the greater exponent of every prime factor present. Step 2: This gives (2^3\times 3^2\times 5\times 7=2520). Step 3: While finding LCM, do not leave out any prime factor.
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What is the correct answer to this question?
(2520)
Why is this the correct answer?
Step 1: For LCM, take the greater exponent of every prime factor present. Step 2: This gives (2^3\times 3^2\times 5\times 7=2520). Step 3: While finding LCM, do not leave out any prime factor.
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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