Thursday 3 May 2018

PROBABILITY 2


A card is chosen at random from a deck of 52 cards. It is then replaced and a second card is chosen. What is the probability of choosing a jack and then an eight?

solution
P(jack)
 = 
 4 
52
P(8)
 = 
 4 
52
P(jack and 8)
 = 
P(jack)
 · 
P(8)

 = 
 4 
 · 
 4 
52
52
 = 
  16  
2704
 = 
  1  
169


Hence probability of choosing a jack and then an eight is 1/69


TRY THIS………….


A card is chosen at random from a deck of 52 cards. It is then replaced and a second card is chosen. What is the probability of choosing a king and then a three?

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