document.write( "Question 1077532: 1. Two dice are rolled. Find the probability both are 3.\r
\n" ); document.write( "\n" ); document.write( "2. Two dice are rolled. Find probability 3 or 5.\r
\n" ); document.write( "\n" ); document.write( "3. Two cars are selected from a production line of 20 cars where 4 are defective. Please find probability both cars are defective. \r
\n" ); document.write( "\n" ); document.write( "4. Two cars are selected from a production line of 20 cars where 4 are defective.
\n" ); document.write( "Please find probability first car or second car are defective.
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #692014 by Boreal(15235) $\"\"$ $\"About$

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it is (1/6)(1/6)=(1/36) multiply when independent.
\n" ); document.write( "3 or 5 is (1/3). Add.
\n" ); document.write( "It is (4/20)(3/19)=12/380=3/95.
\n" ); document.write( "---------------4/20---------3/19=12/380
\n" ); document.write( "|---------------------------16/19=64/380
\n" ); document.write( "|--------------16/20--------4/19=64/380
\n" ); document.write( "|---------------------------15/19=240/380
\n" ); document.write( "The top three are the first or the second (or both) which is 140/380 or 7/19.
\n" ); document.write( "If one means either one or not both, then it is 120/380 or 6/19. That has to be clarified in the problem. \n" ); document.write( "

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