document.write( "Question 1200636: In a lecture class of 100 students, 12 are left handed. If two students are chosen at random, what is the probability that:\r
\n" ); document.write( "\n" ); document.write( "a) Both are left-handed
\n" ); document.write( "b) Neither are left-handed
\n" ); document.write( "c) Extend your probability tree diagram to show the possible outcomes if three students are chosen.
\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #834813 by ikleyn(52879)\"\" \"About 
You can put this solution on YOUR website!
.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "        Probably,  the shortest way to answer questions  (a)  and  (b)  is  THIS\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\r\n" );
document.write( "(a)  P = \"%2812%2F100%29%2A%2811%2F99%29\" = \"%2812%2F100%29%2A%281%2F9%29\" = \"%284%2F100%29%2A%281%2F3%29\" = \"%281%2F25%29%2A%281%2F3%29\" = \"1%2F75\" = 0.1333  (rounded).    ANSWER\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "(b)  P = \"%28%28100-12%29%2F100%29%2A%28%28100-13%29%2F99%29\" = \"%2888%2F100%29%2A%2887%2F99%29\" = \"%2888%2A87%29%2F%28100%2A99%29\" = \"%288%2F9%29%2A%2887%2F100%29\" = \"%282%2F9%29%2A%2887%2F25%29\" = \"%282%2A87%29%2F%289%2A25%29\" = \"174%2F225\" = 0.7733  (rounded).    ANSWER\r\n" );
document.write( "
\r
\n" ); document.write( "\n" ); document.write( "Solved.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "These formulas do not require explanations: they are SELF-EXPLANATORY and speak for themselves.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );