There are 5 distinct pairs of white socks and 5 pairs of black socks in a cupboard. In the dark, how many socks do I have to pull out to ensure that I have at least 1 correct pair of white socks?

a)3

b)11

c)12

d)16

• answer is 12.
  we need a pair of white socks.
  total numbet of pair=10(5black,5white)
  it may be possible that the first 5 pair i mean 10 socks may br black.
  if first 5 pair(1 pair =2 socks) are black.than we need two more socks.
  so answer is C
• 12 years agoHelpfull: Yes(15) No(4)
• ans is 16
  worst case first pick all black socks i.e 5*2=10
  den pick 5 white socks since all white may be distinct bcoz it is written dat 5 distinct pair of white socks so pick 1 more white socks to ensure dat at least 1 pair of correct socks has been picked
  
• 12 years agoHelpfull: Yes(5) No(5)
• 3
  Let at first I pick up a white sock
  then a black sock
  At the third attempt i pick up white/black sock.So it makes a pair.
• 12 years agoHelpfull: Yes(3) No(12)
• its a simple ans =3
  if the first two are differnt thn third oe will definiely match to either of the two
  
• 12 years agoHelpfull: Yes(2) No(8)