February 27, 2017

Homework Help: Math Binomial theorem

Posted by ann on Sunday, April 17, 2011 at 8:13pm.

I'm preparing for a test and one of the questions in my text is as follows:
In a trivia contest,Sam has drawn a topic he knows nothing about, so he makes random guesses for the 10 T/F questions. Use the binomial theorem to help find
a)the number of ways Sam can answer the test using exactly four trues
b)the number of ways that Sam can answer the test using at least one true. The answers are 210 and 1023. I have no idea how to approach this.

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