The LCM of two numbers is 1710 and the HCF of numbers is 57. How many pairs of number can be formed.
Answer & explanation
Correct answer: option 2
HCF × (Product of other factors) = LCM
57 × (a × b) = 1710
(a × b) = 30
Possible pairs (a, b) =
i) 1 , 30
ii) 2, 15
iii) 3, 10
iv) 5, 6
Therefore,
4 pairs can be formed.