3 white chips,7 blue chips,16 green chips,2 chips are drawn from the box in successful what is the probabilty one is blue and other is white?
a)7/50 b)8/30 c)7/25d)20/26

• one white chips is selected from 3 so 3c1.
  one blue chip is selected from 7 so 7c1.
  total 2 chips selected out of 26
  so (3c1*7c1)/26c2
• 11 years agoHelpfull: Yes(16) No(1)
• Selection of one white chip out of 3 white chips = 3C1
  Selection of one blue chip out of 7 blue chips = 7C1
  Selection of 2 chips out of 26 chips = 26C2
  
  So,
  Probability = (3C1*7C1)/26C2 = 21/325
  None of the given answers is correct.
• 11 years agoHelpfull: Yes(7) No(2)
• there r 2 possibilties either the chips drawn can be bw(blue,white) r wb(white blue).so for first case prob. will be-
  7/26*3/25=21/650.
  for sec. case prob will also be 21/650.so total prob will be.
  21/325.
  so none of the option match so please chake the question because nothing wrong with solution.
  
  
• 11 years agoHelpfull: Yes(6) No(4)
• Probability = (3C1*7C1)/26C2 = 21/325
• 11 years agoHelpfull: Yes(3) No(1)
• Selection of one white chip in given white chips = 3C1
  Selection of one blue chip in given blue chips = 7C1
  Selection of 2 chips out of 26 chips = 26C2
  so required result ,(3C1*7C1)/26C2 = 21/325
  
• 11 years agoHelpfull: Yes(0) No(0)
• # of ways to succeed: 7*3 = 21
  ----
  # of possible outcomes:26C2 = (26*25)/(1*2) = 325
  
  -----------
  Ans: 21/325 = 0.0646
  ======================
• 11 years agoHelpfull: Yes(0) No(0)