In Night, describe three ways that Eliezer uses his smarts to stay alive.

Eliezer uses his drive to survive as the focal point of
the narrative.  It is difficult to address the question, though, because the primary
motivation of the narrative is not to detail a triumphant story of survival.  It is
rather a mournful narrative of how the inversion of values is particularly cruel and
painful to endure.  I supposed one could say that Eliezer's "smarts" in not speaking nor
assisting his father when he was being beaten would be one moment that assisted in his
survival.  If he had advocated for his father, Eliezer himself might have been beaten,
and, in his condition, this would have been fatal.  Another moment when Eliezer uses his
smarts is when he is able to trade his ration of bread to be closer to his father at
Buchenwald.  This shows a level of intelligence in understanding the value of bartering
goods in order to achieve what is needed.  If one really wants to expand the idea of
"smarts," saying that he was 18 at the primary selection at Birkenau when Dr. Mengele
encounters him was "smart" in that he endured the first selection.  The drawback was
that it would mark the last moment he would see his mother and sister again.  Again, I
am not sure one could point to specific moments that reflect a glorious vision of
survival because that is not the focus of Wiesel's work.  "Smarts" and using skills to
survive is a secondary issue to the larger issue of how one appropriates an experience
like the Holocaust from ethical and psychological levels.