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The ratio of two numbers is 7 : 9 and their LCM is 945. What is their HCF?1. 142. 153. 104. 12 |
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Answer» Correct Answer - Option 2 : 15 Given : Ratio of two numbers 7 : 9 Their LCM is 945 Formula used : Multiplication of two numbers = LCM × HCF Calculations : Let the HCF be x The number will be 7x and 9x ⇒ 7x × 9x = x × 945 ⇒ x = 15 ∴ The HCF will be 15 |
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