Least no. when divide by 7 gives remainder 6, 6 gives 5, 5 gives 4 and so on ?

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1. 419

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2. 419,209 is crt.
   59*7=413 reminder 6
   69*6=414 reminder 5
   83*5=415 reminder 4
   same as 209
   29*7=203 reminder 6
   34*6=204 reminder 5
   41*5=205 reminder 4

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