Question 1199882
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<pre>
                        DEFINITION

    Greatest Integer Function [...] is a function that gives 
    the greatest integer less than or equal to a given number. 



                        SOLUTION


pi = 3.14...


pi/2 = 1.57...


The greatest integer number,  lesser than or equal to pi/2 = 1.57...,  is  1.


THEREFORE,  f(pi) = [pi/2] = [1.57...] = 1.      <U>ANSWER</U>
</pre>

Solved.