Twice the sum of consecutive numbers n and is 510.
One of the numbers is n
The next consecutive number is (n + 1)
so 2 • [ (n) + (n + 1) ] = 510
next just work it on out 2 • (2n + 1) = 510
4n + 2 = 510
4n = 508
n = 127 and (n + 1) = 128
the consecutive numbers are 127 and 128
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