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Class 10MathematicsReal NumbersFundamental Theorem of ArithmeticExpertLevel 5
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The HCF of two numbers is 120 and their LCM is 9240. If one number is 840, what is the other number?

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Answer and explanation

Correct answer: 1320

Step 1: Product of the two numbers is (120\times9240=1108800). Step 2: One number is 840, so the other is (1108800\div840=1320). Step 3: As a check, the HCF of 840 and 1320 is 120.

Related tags

Hcf-Lcm-RelationMissing-NumberExpert

Frequently asked questions

What is the correct answer to this question?

1320

Why is this the correct answer?

Step 1: Product of the two numbers is (120\times9240=1108800). Step 2: One number is 840, so the other is (1108800\div840=1320). Step 3: As a check, the HCF of 840 and 1320 is 120.

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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