In a box there are 13 white chips, 7 blue chips, 6 green chips. Two chips are drawn in succession. What is the probability that the two chips contain one white chip and one blue chip?
option
a) 7/50
b) 8/30
c) 7/25
d) 20/26

• 7/25 -- ANS
• 11 years agoHelpfull: Yes(21) No(1)
• (13c1*7c1)/26c2=7/25
• 11 years agoHelpfull: Yes(6) No(0)
• 13c1 * 7c1 / 26c2 = 13*7/26*25= 7/50
• 11 years agoHelpfull: Yes(5) No(7)
• 7C1+13C1/26C2==7/25
• 10 years agoHelpfull: Yes(2) No(0)
• 13/26*7/25=7/50
  
• 11 years agoHelpfull: Yes(1) No(15)
• 7/50
  guess
  
• 10 years agoHelpfull: Yes(1) No(2)
• (13c1*7c1)/26c2=(13*7)/(25*26)=7/50
• 10 years agoHelpfull: Yes(1) No(1)
• (13/26*7/25)*2(as there are two ways to select white and blue as White-Blue or Blue-White)
• 7 years agoHelpfull: Yes(0) No(0)
• 13c1*7c1/26c2=7/25
• 7 years agoHelpfull: Yes(0) No(0)
• the possibility of white chip is =13c1
  the possibility of blue chip is = 7c1
  total number of chips = 13+7+6 = 26
  in that we are drawn two chips then it becomes 26c2
  therefore,
  (13c1*7c1)/26c2=(13*7)/(26*25/1*2) = 7/25.
• 5 years agoHelpfull: Yes(0) No(0)