Home › UP Board Class 10 › mathematics › Real Numbers › If HCF(a, b) = 9 and a · b = 1620, find LCM(a, b).
If HCF(a, b) = 9 and a · b = 1620, find LCM(a, b).
A1620
B180
C80
D9
Answer & Solution
Correct answer: B. 180
HCF × LCM = a × b, so LCM = 1620 / 9 = 180.
Related questions
If p is prime and p divides a², then p divides a. This step is used to prove which number Numbers that fill the number line completely (every point on the line corresponds to such Which of the following will have a terminating decimal expansion?The decimal expansion of 1/6 is:Will the decimal expansion of 13/125 terminate?Which of the following is an irrational number?Two bells ring at intervals of 9 and 15 minutes. They ring together at noon. When do they Find the LCM of 12 and 18.