Do the exercises below. Find the LCM of each set of numbers. 1) 7 and 21 2) 4, 8, and 12 3) 10, 15, and 45 4) 12, 18, and 36 5) 9, 12, and 18 6) 6, 12, and 18 7) 8, 16, and 20 8) 12, 20, and 28 9) 30, 40, and 50 10) 3, 12, and 24 6 CO_Q1_N​