document.write( "Question 1172933: Among 10 laptop computers, five are good and five have defects. Unaware of this, a customer buys 6 laptops.
\n" ); document.write( "a) What is the probability of exactly 2 defective laptops among them?
\n" ); document.write( "b) What is the probability of 3 defective and 3 good laptops among them
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #798125 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
\n" );
document.write( "Hi,
\n" );
document.write( "p = 1/2 , n = 10 , 5G, 5def
\n" );
document.write( "customer buys 6 laptops.
\n" );
document.write( "Probability of them being good or defective is the same
\n" );
document.write( "a) What is the probability of exactly 2 defective laptops among them?
\n" );
document.write( "P(2def) = (5C2)(5C4)/(10C6) = (10)(5)/(210)
\n" );
document.write( "b What is the probability of 3 defective and 3 good laptops among them
\n" );
document.write( "P(3 defective and 3 good laptops) = (5C3)(5C3)/(10C6) = (10)(10)/(210) \n" );
document.write( "

\n" );