Posted by corey on Monday, May 23, 2011 at 7:41pm.
A multiplechoice test has 10 questions. Each question has 5 choices. If a student answers each question by guessing randomly, find the probability that the student gets:
a) at most 4 questions correct
b) at least 7 questions correct
Please show your work.

math  Anonymous, Sunday, September 28, 2014 at 1:33am
5,7
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