Q3 of 128 Page 18

Find g. c. d. and l.c.m.. :

15, 21, 35

15 = 1 × 3 × 5


21 = 1 × 3 × 7


35 = 1 × 5 × 7


Therefore, g. c. d(15, 21, 35) = 1


l.c.m.(15, 21, 35) = 3 × 5 × 7 = 15 × 7 = 105


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