there is a set of 52 card.1 card fall down.then we take 2 cards from the rest.that 2 cards are spade.what is the probablity of that fallen card is spade?

• there are total 13 spades card in a pack if we have drawn 2 spade cards from the pack then out of 13 cards only 11 cards are left.
  and out 52 card only 50 cards are left in hand.
  p(fallen card is spade)=11C1/50C1=11/50
• 11 years agoHelpfull: Yes(29) No(7)
• beware its solution is wrong it is NCRT que and its ans is 11/50
  as 2 card shown out of 52 not 51 as fallen card cant predict
  so probability of card to be of spade is (13-2)/(52-2)=11/50
  we simply minus here because 2 cards can firmly be predicted and thn we find rest of cards probability
  it is requested to admin plz re correct the solution
• 11 years agoHelpfull: Yes(24) No(1)
• P=1/4
  As the card fallen has nothing to do with the events which follow it...so P=13/52
• 11 years agoHelpfull: Yes(21) No(19)
• the 2 cards are taken after the card is fallen.
  so probability of the fallen card is a spade is 13c1/52c1=13/52=1/4
• 11 years agoHelpfull: Yes(7) No(2)
• ans is 1/4
  there r 52 cards
  no. of sets =4. hence 52/4=13.
  probability of fallen card = 13/52 =1/4
• 11 years agoHelpfull: Yes(4) No(3)
• no.of spades is 13/52
• 11 years agoHelpfull: Yes(3) No(2)
• probability must be(13-2)/(52-2)=11/50.
  since the two drawn cards are spades. so we can't include them in finding probability.only 11 spades are left.
• 11 years agoHelpfull: Yes(2) No(1)
• admin u r wrong ans will be 11/50
  as 2 cards are taken then 50 cards are remaining
  also 2 spades are taken the 11 spades are remaining
  so the probability of the dropped card to be spade is 11/50
  (the probability is asked after the spade has been removed so only 11 spade are remaining..if it will be asked before the card are taken then the probility will be 13/52)
  given in arun sharma(probability lod3 ques 1)
• 11 years agoHelpfull: Yes(2) No(0)
• probability is = 12C2/51C2
• 11 years agoHelpfull: Yes(1) No(4)