Question

If 111 -> 13, 112 -> 24, 114 -> 46, and 115 -> 57, complete this statement: 117 -> ____. Explain.

Answer 1

79 - highest digit and sum of digits

Here's an oldie but goodie. Find the pattern in this sequence:

1
11
21
1112
3112
211213
312213
212223
114213
31121314
...