The LCM of two numbers is 840 and their HCF is 7. If one of the numbers is 56, find the other.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 105.
We know that,
LCM × HCF = Product of the two numbers
Let the other number be x
According to the question,
⇒ LCM × HCF = 56 × x
⇒ 840 × 7 = 56 × x
⇒ x = 840 × 7/56
⇒ x = 105
Hence, the other number is 105