Question 854773
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Hi,
 p(heads) = .5 and q(tails) = .5   AND  n = 5
Using {{{P (x)= highlight_green(nCx)(p^x)(q)^(n-x) }}} 
Using {{{P (2)= highlight_green(5C3)(.5^2)(.5)^(3) = highlight_green(171)(.5^2)(.5)^(3) }}}