HCF & LCM

HCF and LCM Worksheet-10

1. The Lowest Common Multiple of two numbers is 3,718. Which of the following cannot be the Greatest Common Factor of these numbers?

(a) 13                  (b) 104               (c) 143                (d) 26

2. GCF of two numbers 'a' and 'b' is 1. What is the LCM of those two numbers?

(a) a – b             (b) b – a             (c) ab                  (d) a + b