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Q.

A card is drawn from a well-shuffled deck of 52 playing cards. The probability that the card will not be an ace is:


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a

7 13  

b

9 13  

c

1 13  

d

12 13   

answer is D.

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Detailed Solution

Given that a card is drawn from a well-shuffled deck of 52 playing cards. We have to find the  probability that the card will not be an ace
For an event E, probability is given by,
P E = Number of favourable outcomes n(E) Total number of outcomes n(S)  
There are 4 ace cards in the deck of 52 cards.
So, n(S) = 52.
So, the number of cards that are not ace is n(E), 52-4=48.
Therefore, the probability that the randomly drawn card is an ace is,
P E = 48 52 P E = 12 13  .
Thus, the probability of not getting an ace is 12 13  .
Hence, correct option is 4.
 
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A card is drawn from a well-shuffled deck of 52 playing cards. The probability that the card will not be an ace is: