Q. Give HCF (306, 657) = 9 Find the LCM (306, 657).
(A) 21331
(B) 33228
(C) 22338
(D) 22318
Question from UPPSC Prelims CSAT 2024
Correct Answer: (C) 22338
Explanation:
To solve this problem, we use the relationship between the Highest Common Factor (HCF) and the Least Common Multiple (LCM) of two numbers:
HCF × LCM = Product of the two numbers
Step 1: Write down the given values
– HCF(306, 657) = 9
– The two numbers are 306 and 657.
Step 2: Calculate the product of the two numbers
The product of the two numbers is:
306 × 657 = 201042
Step 3: Use the formula to find LCM
We know:
HCF × LCM = Product of the two numbers
Substitute the values:
9 × LCM = 201042
Solve for LCM:
LCM = 201042 ÷ 9 = 22338
Final Answer: (C) 22338