8 couples (husband and wives) attend a dance show nach baliye in a popular tv channel.A lucky draw in which 4 persons picked up for a prize is held,then probablity that atleast one couple will be selected is:

a)8/39
b)15/39
c)12/13
d)none of these

• P( selecting atleast one couple) = 1 - P(selecting none of the couples for the prize)
  = 15/39
• 8 years agoHelpfull: Yes(3) No(3)
• 12/13
  taking above statement
• 8 years agoHelpfull: Yes(1) No(1)
• 
  
  P( selecting atleast one couple) = 1 - P(selecting none of the couples for the prize)
  
  =
• 8 years agoHelpfull: Yes(0) No(6)
• some fonts in the question are meaningless, so it is difficult to understand the meaning clearly. If we consider the meaning as d = 4*(t-9) then according to the given condition r = 7 mm so diameter = 14 mm, on putting d = 14, we get
  14 = 4*(t-9) or 3.5 = t-9 or t = 12.5
  
  Read more at http://www.m4maths.com/1707-On-planet-korba-a-solar-blast-has-melted-the-ice-caps-on-its-equator-9-years-after-the-ice-melts.html#Gj9u20djiADzMxHX.99
• 8 years agoHelpfull: Yes(0) No(1)
• P( selecting at least one couple) = 1 - P(selecting none of the couples for the prize)
  = 15/39
• 8 years agoHelpfull: Yes(0) No(0)
• plz give the correct ans and also plz give the concept
• 7 years agoHelpfull: Yes(0) No(0)
• Total no. of ways = 8C4
  No. of ways so that no couple s selected = 1
  Probability= (8C4-1)/8C4
• 7 years agoHelpfull: Yes(0) No(1)