document.write( "Question 872056: Suppose that a jar contains 4 pens: 2 black, 1 blue, and 1 red. Three people select a pen at random from the jar, sign a document, and replace the pen in the jar before the next person selects a pen. What is the probability that none of the people use the red pen to sign the document? \n" ); document.write( "
Algebra.Com's Answer #525894 by Fombitz(32388) You can put this solution on YOUR website! \n" ); document.write( "Look at all the possible outcomes, there are 27 of them. \n" ); document.write( "K - black, B-blue, R-red \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( "KKK KKB KKR KBK KBB KBR KRK KRB KRR <-- 4 w/o R \n" ); document.write( "BKK BKB BKR BBK BBB BBR BRK BRB BRR <-- 4 w/o R \n" ); document.write( "RKK RKB RKR RBK RBB RBR RRK RRB RRR <-- 0 w/o R \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( "Look at the outcomes that do not have an R in them. \n" ); document.write( "There are 8 of them. \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |