In a Tarot deck of 78 cards, what are the odds of pulling the same card twice in a row?

Question

Mathematically, it's 1:78 to pull a specific card. But what are the odds of pulling the SAME card twice in a row?

Answer 1

1/78. Assuming you don't mean a specific card (like "the Death card") twice. If you do mean a specific up-front specified card twice, the answer would be (1/78)^2.

But for just ANY card twice in a row, it's the same as one specific card. The first draw can be any card at all (probability: 78/78 = 1/1), then the second draw must match the original card (probability: 1/78).

1/1 * 1/78 = 1/78.

Of course, this assumes you draw "with replacement" (putting back the card after you draw it). Otherwise the probability is 0.

Answer 2

The probability of pulling any one card is 1 / 78.

Replace the drawn cardback into the deck and shuffle.

The probability of pulling the same card as from the first pull is 1 / 78.

Since the pulls are independent events, we can multiply the probabilities of the seperate pulls to calculate the probability of pulling the same card twice with replacement.

P(pulling same card twice with replacement)
= (1/ 78)(1 / 78)
= 1 / 6084

Answer 3

You are correct that the pulling any particular card on the first draw is 1/78. If you replace the card and randomly draw again, the chance of getting a particular card on the second draw is also 1/78. To get the joint probability of picking the SAME card in two successive draws you multiply 1/78 x 1/78. The resulting probability is 0.000164. To put this in perspective, if you drew two cards in this way 100,000,000 times, you would draw the same card twice in a row about 164 times!

Answer 4

I think its 1/78 times 1/78 =0.000164366
... (the probability of getting that card the first time, then the probability of getting that card the second time, after replacing it.) I am not sure though...I took stats a long time ago. What do other people think?

Actually never mind, looking at other peoples answers, its just 1/78 (what i said above only applies if u specified what card u were pulling)

Answer 5

It's still 1/78 because no matter what card you pull first, your odds of pulling the same one again are still 1/78. Now if you are thinking of a card to pull twice BEFORE your first pull, then the odds are 1/6084

Answer 6

That depends on how much belief you have in the cards, and how much you rely upon them. The fact that your readings come up the same every time when you read for this particular question means there is something there, perhaps if you dig deeper you will be able to find out the answer below it all. Also, I want you to keep in mind that when you ask a question like, "what is the future of mankind?" you are leaving the field very open to how the spirits want to answer you. They may decide that you are talking about the group of mankind around you, or they may decide you are only talking about yourself. Try being more specific with your question by asking the cards something like "what is the fate of the world's population if we continue on the same path that we are currently on?" You might find the answer finally changes. If so, perhaps you need to investigate your previous question or explore other similar but more specific questions to get the full answer you wish to understand. Remember, the spirit world moves in a different way than we do.

Answer 7

It's 1 in 78. It works that way because you didn't specify which card. If you draw a card, all that needs to happen for your condition to be met is for that same card to be drawn again. It would be 1 in 6084 if you had a specific card in mind that you wanted drawn twice in a row.

Answer 8

1:78^2

Answer 9

1:78.

You can pull any card the first time.

Answer 10

about 1 in 39