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No: 12       October 09, 2019


NEIGHBOR SUMS

NEIGHBOR SUMS

Each of the digits of a number is different and the sum of all the neighboring two digits is included in this number.

What is the largest number satisfying these conditions?

Example: 246107
(2+4=6, 4+6=10, 6+1=7, 1+0=1, 0+7=7)


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