Start from the 2nd floor and then go to +2 floor every time to try the next. If first egg breaks at any level then just test the 2nd egg on the -1 floor from the current level. For example….. go in this way ….. 2nd , 4th, 6th, 8th, 10th, 12th, 14th and so on….. and lets consider the egg breaks at 14th floor then try the 2nd egg at 13th floor and if it not breaks at 13 than  it is the maximum level and after that the egg will break.