27th June Learning summary of probability

Today I got into the beginning of new phase on binomial coefficient, which I've touched a little bit before,

it's something about 2 power to the number.

Like how many ways you can get two heads of flipping coins by six times,

it is equivalent to calculate how many ways of choosing 2 people to be committee from 6 people.

Let's keep going, and don't worry, everything is going to be fine, Wallace Tiger : ) 

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