Q2 of 128 Page 18

Find g. c. d. and l.c.m.. using the fundamental theorem of arithmetic:

225 and 145

225 = 5 × 45 = 5 × 5 × 9 = 5 × 5 × 3 × 3

145 = 5 × 29


g. c. d(225, 145) = 5


l.c.m.(225, 145) = 52 × 32 × 29


= 25 × 9 × 29= 6525


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