A bag contains 4 white balls and 5 balck balls.3 balls are drawn at random.What is the odd against aa black?

• Total number of choices= 9C3=84
  Against black = Total number of choices-Probability of getting black
  Probability for black=5C3=10
  so (against black) 84-10=74
  Odds against black=No.of unfavorable choices:no.of favorable choices
  So=74:10 will be the answer.
• 12 years agoHelpfull: Yes(4) No(2)
• supryapryange has explained the question right but then at the end she has made a mistake so the right answer is74:84.
• 12 years agoHelpfull: Yes(1) No(0)
• sorry the answer will be 74:84
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• odd against black=(formula for odd against m/(n-m))
  10/84-10=10:74
  
• 12 years agoHelpfull: Yes(0) No(1)