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The HCF and the product of two numbers are 21 and 2205 respectively then find the LCM of that numbers.
1. 189
2. 126
3. 105
4. 147

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Correct Answer - Option 3 : 105

Given: 

HCF is 21 and the product of two numbers is 2205

Concept: 

HCF × LCM = Product of two numbers

Calculation:  

Let the LCM of that numbers is 'y'

Now,

⇒ 21 × y = 2205

⇒ y = 2205/21

⇒ y = 105

∴ The required LCM is 105.

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