If you have a 52 card deck and deal 48 cards, the probability that the Jack of Spades
is in the remaining 4 cards is the same as in the case of dealing 4 cards from the 52
card deck, the probability the Jack of Spades is in those 4 cards.
To solve the problem you can see there are 4 possible ways that the Jack of Spades
can come up in the 4 deal-led cards.
I.- It can come in the first card. P1= 1/52.
II.- Come in the second card. P2= 51/52 (1/51).
III.- Come in the third card. P3= 51/52 (50/51) (1/50).
IV.- Or in the fourth card. P4= 51/52 (50/51) (49/50) (1/49).
The probability looked for is P = P1+P2+P3+P4 = 1/13
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