is (e) 10 and 15 is (d) 8 and 12 is (f) 12 and 15 is Section B 1. Write the sets of the first ten multiples and the sets of common multiples these pairs of numbers, then find their L. C.M. (a) 3, 4 (b) 4,6 (C) 6,8 (d) 8, 12 2. Find the L. C.M. of the following numbers by factorization method. (e) 10, 15 (a) 4, 6 (b) 12, 15 (C) 14, 21 (e) 10, 12, 15 (d) 16, 24 (f) 10, 15, 20 (g) 12, 18, 24 (h) 48, 64, 72 Find the L. C.M. of the following numbers by division method​