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Class 10MathematicsReal NumbersHCF and LCM using prime factorisationHardLevel 12
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If the LCM of (35), (49), and (63) is found, what will be the power of (7) in it?

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Answer and explanation

Correct answer: (2)

Step 1: (35=5\times7), (49=7^2), and (63=3^2\times7). Step 2: The highest power of (7) in the LCM is (2). Step 3: LCM uses the highest power of each prime.

Related tags

Real-NumbersLcmPrime-Power

Frequently asked questions

What is the correct answer to this question?

(2)

Why is this the correct answer?

Step 1: (35=5\times7), (49=7^2), and (63=3^2\times7). Step 2: The highest power of (7) in the LCM is (2). Step 3: LCM uses the highest power of each prime.

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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  5. 5What is the LCM of (40) and (60)?
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  7. 7What will be the LCM of (45) and (75)?
  8. 8Which is the HCF of (32) and (48)?
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