Question

Find the lcm by prime factorization method of 30 ,36 and 40

Answer 1

2 ! 30,36,40

2 !15,12,20

2 !15,6,10

3 !15,3,5

5 !5,1,5

5 !1,1,1

LCM= 2 *2*2*2*3*5*5= 1200

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