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This is how Edward’s Lotteries work. First, 9 different numb

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This is how Edward’s Lotteries work. First, 9 different numb [#permalink] New post   08 May 2019, 10:07
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This is how Edward’s Lotteries work. First, 9 different numbers are selected. Tickets with exactly 6 of the 9 numbers randomly selected are printed such that no two tickets have the same set of numbers. Finally, the winning ticket is the one containing the 6 numbers drawn from the 9 randomly. There is exactly one winning ticket in the lottery system. How many tickets can the lottery system print?

(A) 9P6

(B) 9P3

(C) 9C9

(D) 9C6

(E) 69
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Re: This is how Edward’s Lotteries work. First, 9 different numb [#permalink] New post   23 Aug 2019, 06:43
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Carcass wrote:
This is how Edward’s Lotteries work. First, 9 different numbers are selected. Tickets with exactly 6 of the 9 numbers randomly selected are printed such that no two tickets have the same set of numbers. Finally, the winning ticket is the one containing the 6 numbers drawn from the 9 randomly. There is exactly one winning ticket in the lottery system. How many tickets can the lottery system print?

(A) 9P6

(B) 9P3

(C) 9C9

(D) 9C6

(E) 69


9 numbers, choose 6 of them. 9C6. D.
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Re: This is how Edward’s Lotteries work. First, 9 different numb [#permalink] New post   10 Sep 2019, 19:44
Can someone explain this? I thought it would be 9P6 since it states that "Tickets with exactly 6 of the 9 numbers randomly selected are printed such that no two tickets have the same set of numbers.
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Re: This is how Edward’s Lotteries work. First, 9 different numb [#permalink] New post   10 Sep 2019, 22:47
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logann2 wrote:
Carcass wrote:
This is how Edward’s Lotteries work. First, 9 different numbers are selected. Tickets with exactly 6 of the 9 numbers randomly selected are printed such that no two tickets have the same set of numbers. Finally, the winning ticket is the one containing the 6 numbers drawn from the 9 randomly. There is exactly one winning ticket in the lottery system. How many tickets can the lottery system print?

(A) 9P6

(B) 9P3

(C) 9C9

(D) 9C6

(E) 69


9 numbers, choose 6 of them. 9C6. D.



Selected exactly 6 of the 9 available numbers means they're randomly picking 6 of the 9 numbers. The part that lets you know that it's indeed a choose function and not permutation is that the problem says that "no two tickets contain the same numbers" and (paraphrasing) "the winning ticket contains the 6 winning numbers"

So order doesn't matter. Does that help?
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Re: This is how Edward’s Lotteries work. First, 9 different numb [#permalink] New post   11 Sep 2019, 09:18
logann2 wrote:
logann2 wrote:
Carcass wrote:
This is how Edward’s Lotteries work. First, 9 different numbers are selected. Tickets with exactly 6 of the 9 numbers randomly selected are printed such that no two tickets have the same set of numbers. Finally, the winning ticket is the one containing the 6 numbers drawn from the 9 randomly. There is exactly one winning ticket in the lottery system. How many tickets can the lottery system print?

(A) 9P6

(B) 9P3

(C) 9C9

(D) 9C6

(E) 69


9 numbers, choose 6 of them. 9C6. D.





Selected exactly 6 of the 9 available numbers means they're randomly picking 6 of the 9 numbers. The part that lets you know that it's indeed a choose function and not permutation is that the problem says that "no two tickets contain the same numbers" and (paraphrasing) "the winning ticket contains the 6 winning numbers"

So order doesn't matter. Does that help?


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Re: This is how Edwards Lotteries work. First, 9 different numb [#permalink] New post   04 Jun 2024, 08:29
Hello from the GRE Prep Club BumpBot!

Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: This is how Edwards Lotteries work. First, 9 different numb [#permalink]
04 Jun 2024, 08:29
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