Question

Find LCM and HCF of the following integers by applying the prime factorization method. A. 35,42,343 b.121,1815,198 c.336,120,360
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Answer 1

Step-by-step explanation:

a. 35,42,343

• 35=5*7
• 42=2*3*7
• 343=7*7*7

LCM=2*3*5*7*7*7= 10290

HCF= 7

b.121,1815,198

• 121= 11*11
• 1815=3*5*11*11
• 198= 2*3*3*11

LCM=2*3*3*5*11*11= 10890

HCF=11

c.336,120,360

• 336= 2*2*2*2*3*7
• 120= 2*2*2*3*5
• 360= 2*2*2*3*3*5

LCM=2*2*2*2*3*3*5*7=5040

HCF=2*2*2*3= 24

Hope it helps

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