The LCM of two co-prime numbers is their
(a) sum
(b) difference
(c) product
(d) quotient

Q. If the sum of LCM and HCF of two numbers is 1260 and their LCM is 900 more than their HCF, then the product of two numbers is

(a) 203400
(b) 194400
(c) 198400
(d) 205400

Q. The product of any two prime numbers is 437, what will the sum of their LCM and HCF?

Q. The LCM of the two quotients obtained when two numbers a and b are divided by their HCF is 77. LCM of another pair of quotients. when other two numbers c and d have the same HCF as that of a and b, and when divided by it is 221. Which of the following could be the ratio of the sum of a and b to that of the difference between c and d?

Q. The product of two co-primes is 117. Their LCM should be

Q. The LCM and HCF of two rational numbers are equal, then the numbers must be

(a) prime
(b) co-prime
(c) composite
(d) equal