Question 1204441
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It is  {{{(20!/(9!*6!*3!*2!))*(0.5^9*0.28^6*0.15^3*0.07^2)}}} = {{{775975200*(0.5^9*0.28^6*0.15^3*0.07^2)}}} = 0.0121  (rounded).    <U>ANSWER</U>
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Solved.