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Omni-MATH / How many 5-digit numbers (abcde)¯ exist such that digits b and d are each the sum of the digits to their immediate left and right? (That is, b=a+c and d=c+e.) · Discussion

Discussing How many 5-digit numbers (abcde)¯ exist such that digits b and d are each the sum of the digits to their immediate left and right? (That is, b=a+c and d=c+e.) · Omni-MATH

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