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Every 7 years the Lancaster family has a family reunion. Every 6 years they update their family tree. If they both had a photo taken and updated their family tree in 1997, in what year will both events occur again?

 Feb 27, 2020
 #1
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Lowest common multiple of 6 and 7 is 42   

 

 

so 42 years from 1997 =.......

 Feb 27, 2020

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