There have 12 basket,7 red balls and 5 white balls,find the probability of getting atleast 1 red ball and 1 blue ball outside the basket or tin

• 495...(7c3*5c5)+(7c4*5c4)+(7c5*5c3)+(7c6)5c2)+(7c1*5c1)=495
• 10 years agoHelpfull: Yes(5) No(2)
• 12 basket so , probability of choosen 1 basket from 12 basket is :- 12c1
  same as prob. of red and blue balls is 7c1*5c1/12c2
  and ans is : 12c1*7c1*5c1/12c2
• 10 years agoHelpfull: Yes(3) No(8)
• answer would be= (7c1*5c1)/12c2=35/66
• 10 years agoHelpfull: Yes(3) No(0)
• 5+7=12
  12c2=132/2=66
  
  7c1+5c1=7+5=12
  
  66/12=11/2
• 10 years agoHelpfull: Yes(0) No(8)
• 45
  10!/8! 2!
• 10 years agoHelpfull: Yes(0) No(1)
• (7c1*5c1)/12c2= 35/66
• 10 years agoHelpfull: Yes(0) No(0)
• it is 495
  
• 10 years agoHelpfull: Yes(0) No(0)
• i think it's an incomplete question....as IN QS it is mentioned 5 white balls but he is asking for finding the probability of BLUE???? baLL.
• 8 years agoHelpfull: Yes(0) No(0)