+980 The first term of an arithmetic sequence is 1, another term of the sequence is 91 and all of the terms of the sequence are integers. How many distinct arithmetic sequences meet these three conditions?
+37146 Ya gotta get from 1 to 91 a difference of 90 by adding successive integers like 1 2 3 4 5 6 9 10 15 18 30 45 90
13 ways do you see any i missed?
