
Mark M. answered 09/06/19
Mathematics Teacher - NCLB Highly Qualified
The digits are:
n, n + 1, and n + 2
1 ≤ n < 5
123, does not sum to 15
234, does not sum to 15
345, does not sum to 15
456, woo woo, sums to 15 and is divisible by 6, yet 5(6) = 30, Boo!
We have run out of numbers!

David W.
09/07/19