I really do not understand this homework that has to do with probablility?????????????????

Question

What are these questions supposed to mean?:
(I have to determine the probability of these)
Drawing a 3 from a deck of cards
Drawing 2 cards that are all 8 from a deck of cards
Drawing a 7 from a deck of cards
Drawing 2 cards that are all 2 from a deck of cards

Answer 1

1. Drawing a 3 from a deck of cards (1/13)

We know that there are 4 threes in a deck of cards. There are 52 cards in a deck. The probability is:
4/52 = 1/13

2. Drawing 2 cards that are all 8 from a deck of cards (4/663)

We know that there are 4 eights in a deck of cards. There are 52 cards in a deck.
The probability of choosing 1 eight is 4/52, or 1/13.
After choosing the first 8, you have 3 eights left and 51 cards left in the deck to choose from.
The probability of choosing another eight is 3/51.
The probability of choosing 2 eights is 1/13*4/51 = 4/663.

3. This one is done the same way as #1 was done.

4. This one is done the same way as #2 was done.

Answer 2

You first have to know how many cards there are in a deck. (52)

There are 4 suits in a deck of cards. Each suit has a 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, Jack, Queen, King, and Ace. This means that there are four #3 cards in the deck.

Drawing a 3 from a deck of cards= four (#3 cards) / 52 (cards in the deck)

Drawing a 7 from a deck of cards is the same thing as above.

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Drawing 2 cards that are all the #8 from a deck of cards = 2 (cards that are #8) / 50 (the number of cards in a deck minus the cards you will pick)

Drawing 2 cards that are all 2 from a deck of cards is like above.




I hope this helps!

Answer 3

It sounds like your teacher wants you to write the probability of drawing each kin4?d of card, and then write it (probably in the form of a ration-like 2:1, or the form of a fraction). So like for the first question you would figure out how many cards are in a deck(52), and then you would think about how many 3's are in a deck. We know that there is one in each suit, so 4 in all. Therefore the probability of drawing a 3 from a complete deck is 1/13, or the ratio is one chance in 13. This was reduced from the original fraction of 4/52. Just do the same thing (it will be somewhat varied in the second question) for the rest of your answers. Good luck

Answer 4

Hi. In all cases the deck has 52 cards with 4 of each number, so the probability is 1 in 52/4 for any single number and 1 in 51/4 for another with the same card number.

Answer 5

1)8%
2)?
3)8%
4)?

I dont get what you want with number 2 and 4. I got the first answer by saying that there are 52 cards in a deck and four 3 cards. (a 3 for every suit). Then you divide 4 by 52 and you get .076 so you round up to 8. I did the same thing with the third question.

Answer 6

Probability is dealing with the likelyhood that something will occur.

There are 50 plus cards in a deck there are 4 suites which would make 4 3's. 4:52 ratio or 1:13

Answer 7

what grade are u in?!?!?!?! Im in 8th.

probability meens same as fractions.

and there are 4 3's in a deck of cards and 52 cards in a deck so it would be 4/52 then simplify to 1/13

1/26 because it is the same as the one above really except 2 cards so u double the denominator

same as #1 1/13

same as #3 1/26

Answer 8

there are 52 cards in a deck, four(4) of them are 3s so the probability of drawing a 3 is 4 in 48 or 1 in 12

if you draw one card out that leaves 51 cards with 3 of them being the same as the first card drawn chances are 3 in 48 or 1in 16

Answer 9

every deck of cards have 52 cards in them, each card has a number 2,3,4,5,6,7,8,9,10,J,Q,K,A... there are four for each number, a 2 of hearts, clubs, spades and diamonds.

the probability of a:
3 is 4 chances out of 52

Answer 10

well u have to work out how much precent that one of those cards will be pulled out of the stack of cards :)
Good luck.......