In prima zi de la lansarea noii cartii a scriitorului preferat al Elizei s-au vandut 24 de volume adica 6 _ 7

there were only 2 presidents that were under the age of 45. theodore roosevelt, and jfk, that makes 5%

dont't really have enough info here but its likely

sss for the three sides being congruent ( its stands for side side side)

or

sas   for side angle side.   so a side is congruent and and angle and a side