I was wondering if anyone can help answer Questions Q1, Q2, and Q4 shown in the slides of this powerpoint presentation: https://indico.cern.ch/event/528094/contributions/2172823/attachments/1321867/1983225/APSRootTutorial.pdf
It seems simple enough but I am actually not quite sure.
I would really appreciate if someone can come up with an explanation/answer to those questions.
Also, this is a question to help me further learn; it is not from a homework assignment or exam.
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