document.write( "Question 1065416: there are 9 coins in a pocket 4 nickels and 5 dimes
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document.write( "If I were to take 3 coins out what is the probability of those three coins being $0.25.
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document.write( " I was made aware that the answer is 10/21 but not the method of how it was solved
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Algebra.Com's Answer #680677 by Fombitz(32388) You can put this solution on YOUR website! \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( "You can make up a table of the 8 possible outcomes and calculate the probabilities of each. \n" ); document.write( "As you can see the probabilities sum to 1 so all outcomes are covered. \n" ); document.write( "The outcomes that sum to 25 cents are shown in yellow. \n" ); document.write( "These cases are the draws of two dimes and one nickel(NDD, DND, and DDN). \n" ); document.write( "The probability is calculated as, \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |