We know that

LCM = Number which gives remainder 0 when dividing by 2, 4, 6

Since LCM gives remainder 0

LCM + 7 will give remainder 0

So, Required Number = LCM + 7

LCM of 2, 4, 6 = 12

Required Number = LCM + 7

= 12 + 7

= 19

 

Same concept is used in Example 14 and Ex 3.7.4

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.