document.write( "Question 917991: Cards numbered 1 to 50 are put in a hat. What is the probability that the first two cards chosen at random have prime numbers on them? \r
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document.write( "I'm so confused I know you start off the problem with 16/50 but I don't know what you multiply that by... \n" );
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Algebra.Com's Answer #556885 by Hawksfan(61) You can put this solution on YOUR website! If you pick out all the prime numbers from 1 to 50, there are 16 of them. \r \n" ); document.write( "\n" ); document.write( "#primes/total number\r \n" ); document.write( "\n" ); document.write( "first card 16/50\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "second card (16-1)/(50-1)= 15/49\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "now multiply the two fractions 16/50 * 15/49 = 240/2450= 24/245\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |