The ratio of the two numbers is 5 : 7 and their HCF is 3. Their LCM is:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 105
As we know,
Product of two numbers = LCM × HCF
One number = 5 × HCF = 5 × 3 = 15
Second number = 7 × HCF = 7 × 3 = 21
Hence,
⇒ 15 × 21 = 3 × LCM
⇒ 15 × 7 = LCM
⇒ LCM = 105
Hence, the LCM is 105