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A BAG CONTAINS 12 DISCS. THERE ARE 8 BLUE AND 4 RED DISCS.A DISC IS PICKED OUT AT RANDOM AND NOT REPLACED. A SECOND DISC IS THEN PICKED OUT AT RANDOM AND NOT REPLACED.1) DRAW A TREE DIAGRAM.2)EXPRESS EACH OF UR ANSWER AS A FRACTION IN ITS LOWEST TERMS ,CALCULATE THE PROBABILITY THAT : a) BOTH DISCS ARE RED b) AT LEAST ONE DISC IS BLUE c) A THIRD DISC IS PICKED OUT AT RANDOM.CALCULATE THE PROBABILITY THAT ALL THREE DISCS ARE RED. ...... GUYS NOTE THAT..I HAVE SOLVED ALL THE PARTS BUT PART (c) IS NOT CLEAR TO ME...SO PLZ...IF ANY ONE TRIES TO SOLVE THIS QUESTION JUST TELL ME THE ANSWER OF (c).:)
 one year ago
 one year ago
A BAG CONTAINS 12 DISCS. THERE ARE 8 BLUE AND 4 RED DISCS.A DISC IS PICKED OUT AT RANDOM AND NOT REPLACED. A SECOND DISC IS THEN PICKED OUT AT RANDOM AND NOT REPLACED.1) DRAW A TREE DIAGRAM.2)EXPRESS EACH OF UR ANSWER AS A FRACTION IN ITS LOWEST TERMS ,CALCULATE THE PROBABILITY THAT : a) BOTH DISCS ARE RED b) AT LEAST ONE DISC IS BLUE c) A THIRD DISC IS PICKED OUT AT RANDOM.CALCULATE THE PROBABILITY THAT ALL THREE DISCS ARE RED. ...... GUYS NOTE THAT..I HAVE SOLVED ALL THE PARTS BUT PART (c) IS NOT CLEAR TO ME...SO PLZ...IF ANY ONE TRIES TO SOLVE THIS QUESTION JUST TELL ME THE ANSWER OF (c).:)
 one year ago
 one year ago

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HamzaBaigBest ResponseYou've already chosen the best response.1
dw:1358862778742:dw
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.1
Your tree diagram looks corect
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.1
P(RRR) =12/132 * 2/10
 one year ago

HamzaBaigBest ResponseYou've already chosen the best response.1
OK THANKS FRND..I GOT IT
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.1
P(RRR) = 4/12 *3/11 *2/10 =(4*3*2)/(12*11*10) = 1/55
 one year ago
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