document.write( "Question 1139516: One card is drawn at random from a well-shuffled pack of 52 playing cards and the colour is noted(red or black).The card is returned to the pack and a second card is drawn and the colour noted. What is the probability of drawing:
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document.write( "a. two red cards
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document.write( "b. a red card followed by a black card
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document.write( "c. one card each of red and black? \n" );
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Algebra.Com's Answer #759996 by greenestamps(13200)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "(a) both red: P(R,R) = (1/2)(1/2) = 1/4 \n" ); document.write( "(b) red, then black: P(R,B) = (1/2)(1/2) = 1/4 \n" ); document.write( "(c) one red and one black (red, then black; or black, then red): P(R,B)+P(B,R) = 1/4+1/4 = 1/2 \n" ); document.write( " |