This topic is related to Core 2 binomial expansion in that both the topics use the nCr button on the calculator to generate the rows of Pascal’s triangle. Apart from that they shouldn’t be confused.

You will need to be able to use the formula (in the formula book) and use the tables. Below are a couple of questions and three videos to help you.

June 2012 Question 6a – answer here

June 2011 Question 6 – answer here

**Using the formula**

**Using the tables**

p<0.5

p>0.5

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