document.write( "Question 352896: An urn contains 10 red balls and 15 white balls. A ball is selected at random from the urn and not replaced. Then, a second ball is selected. Show that the probability that the second ball is red is the same as the probability that the first ball is red. \n" ); document.write( "
Algebra.Com's Answer #252222 by stanbon(75887) ![]() You can put this solution on YOUR website! An urn contains 10 red balls and 15 white balls. A ball is selected at random from the urn and not replaced. Then, a second ball is selected. Show that the probability that the second ball is red is the same as the probability that the first ball is red. \n" ); document.write( "----- \n" ); document.write( "P(red on 1st draw) = 10/25 \n" ); document.write( "--- \n" ); document.write( "Note: The red is NOT replaced. \n" ); document.write( "--- \n" ); document.write( "P(red on 2nd draw) = 9/24 \n" ); document.write( "----- \n" ); document.write( "Note: These probabilities are NOT the same. \n" ); document.write( "They would be if you had replaced the 1st red drawn. \n" ); document.write( "============================================ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |