Solution off by one?


Wouldn’t the solution actually be 13?
Based on the answer, if you dropped it starting on 14
14->27->39->50->60->69->77->84->90->95->99 =11 drops
Then working back up from 96, if the worst case is N=98
96->97 +2 drops. If it broke on 99 and did not break on 97 you can deduce that the next floor must be N=98.