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uri

  • one year ago

Stats : From a deck of 52 cards,a card is drawn at random.Find the probability that it is: A) a red card B) a face card C)a diamond card D) either a ten,or a queen E) a face card,or a 5,or a 4 of spade.

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  1. uri
    • one year ago
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    What? How?

  2. shkrina
    • one year ago
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    no of card by total cards i hope....

  3. hartnn
    • one year ago
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    yes, first find how many red cards are there in total then divide it by total number of cards P =#red cards / total # of cards

  4. shkrina
    • one year ago
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    imean .. as first one ... no of red cards / total no of cards ...

  5. shkrina
    • one year ago
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    no of face card by total no of cards ;....

  6. uri
    • one year ago
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    How to find how many red cards are there?

  7. hartnn
    • one year ago
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    if you know what a deck is, you will know how many red and black cards are there and how many face cards also

  8. shkrina
    • one year ago
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    got to know the chart ..... if u play card ....

  9. uri
    • one year ago
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    -____________- I don't know? playing cards is HARAM.

  10. hartnn
    • one year ago
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    http://en.wikipedia.org/wiki/Standard_52-card_deck

  11. shkrina
    • one year ago
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    hmm ... neither mee but for doing the sum gota know the chart ...

  12. hartnn
    • one year ago
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    red cards = diamond cards + heart cards

  13. uri
    • one year ago
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    @hartnn So there are always 13 red cards,hartnn? so 13/52?

  14. hartnn
    • one year ago
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    there are 13 heart cards and 13 diamond cards both are considered as red so, total # of red cards = 26 P= 26/52=....?

  15. uri
    • one year ago
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    Wait 13 diamond,13 hearts so 26?

  16. shkrina
    • one year ago
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    hope 26/52

  17. uri
    • one year ago
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    Lol yes got it. @hartnn

  18. uri
    • one year ago
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    so 26/52 =0.5

  19. hartnn
    • one year ago
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    yes, 0.5 is correct :) Face cards - Jacks, Queens, and Kings are called "face cards" because the cards have pictures of their names. so, in 52, how many face cards will be there ?

  20. hartnn
    • one year ago
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    note: there are total 4jacks, 4 queens and 4 kings, one of each suit.

  21. uri
    • one year ago
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    12/52

  22. uri
    • one year ago
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    @hartnn

  23. hartnn
    • one year ago
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    12/52 is correct. how are face cards 36 in number ?

  24. uri
    • one year ago
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    yay so 0.230769

  25. shkrina
    • one year ago
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    kk calculated ace too...

  26. hartnn
    • one year ago
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    C. is simple total 13 diamonds P=... ?

  27. uri
    • one year ago
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    13/52

  28. hartnn
    • one year ago
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    yes, correct d) there are 4 tens one of each suit same way, there are 4 queens , one of each suit P=....?

  29. hartnn
    • one year ago
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    'or' means addition

  30. uri
    • one year ago
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    0.25 for diamond cards,and what does *one on each suit* means?

  31. hartnn
    • one year ago
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    there are 4 suits in the deck hearts spades diamonds and clubs

  32. hartnn
    • one year ago
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    look at the wiki link for details

  33. hartnn
    • one year ago
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    so, 4 tens are 1 ten of heart 1 ten of spade 1 ten of diamond and 1 ten of club same for every other card!

  34. hartnn
    • one year ago
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    can you get d) now ?

  35. uri
    • one year ago
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    Okay so i have a choice i can either go for *a ten* or a *queen* I go for queen so,4/52 = 0.0769

  36. hartnn
    • one year ago
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    'or' in probability means we add the individual probabilities 4/52 for queen + 4/52 for a ten (4+4)/52 will be final answer for d)...just simplify

  37. uri
    • one year ago
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    Oh then that concept is confusing but okay *8/52?*

  38. uri
    • one year ago
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    0.15384

  39. hartnn
    • one year ago
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    yes, 8/52 ...simplify that. same for last part just add total number of face cards + total # of 5's and total # of 4 of spade

  40. uri
    • one year ago
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    Face cards are 12,total 5's are 4 and spade's are 4? So,12+4+4 =20/52 =0.3846153.

  41. hartnn
    • one year ago
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    there are total 4 4's one 4 of heart, one 4 of diamonds one 4 of spades and one 4 of clubs

  42. hartnn
    • one year ago
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    so how many # of 4 of spades ?

  43. uri
    • one year ago
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    Huh? o_O 4?

  44. hartnn
    • one year ago
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    Face cards are 12,total 5's are 4 <---correct there is only \(\huge 1\) 4 of spade

  45. uri
    • one year ago
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    *A 4 of spades?* so only 1 spade? :p

  46. hartnn
    • one year ago
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    there are total 4 4's one 4 of heart, one 4 of diamonds one 4 of spades <------here , only 1 and one 4 of clubs in the question "4 of spade" is asked, which is unique in all there are 13 spades

  47. uri
    • one year ago
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    Don't understand :p

  48. hartnn
    • one year ago
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    which part ? only '4 of spade' ? because # of faces=12 .....correct. # of 5's =4 ....correct (one of each suit) # of 4 of spade =.... ?

  49. uri
    • one year ago
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    I don't understand # of 4 of spade

  50. hartnn
    • one year ago
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    ok, there are 13 cards in each suit A,2,3,4......9,10, J, Q, K A,2,3,4......9,10, J, Q, K of hearts A,2,3,4......9,10, J, Q, K of diamonds A,2,3,4......9,10, J, Q, K of spades A,2,3,4......9,10, J, Q, K of clubs total =52 out of this, how many '4' of spades are there ?

  51. Jack1
    • one year ago
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    there's 1x ace of spades in a deck 1x 2 of spades 1x 3 of spades 1x 4 of spades ######## <---- 1x 5 of spades... etc

  52. Jack1
    • one year ago
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    how many of this card are there in a deck...?

  53. Jack1
    • one year ago
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    EXACTLY that card...

  54. hartnn
    • one year ago
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    ^ only \(\huge \color {red}1\) 4 of spade, unique!

  55. uri
    • one year ago
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    Okay so there are always 13 spades...? :3

  56. hartnn
    • one year ago
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    yes, total 13 spades but that info you don't need here

  57. hartnn
    • one year ago
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    E) a face card,or a 5,or a 4 of spade. a face ---->12 a 5----->4 a 4 of spade --->1 P=(12+4+1)/52

  58. uri
    • one year ago
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    Okay...:) So i have a Question when there was *A face card* why we didn't use 1?

  59. hartnn
    • one year ago
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    because there are in all 12 face cards one Jack of heart one Jack of diamond one Jack of club one Jack of spade total 4 jacks similarly, 4 queens and 4 kings total face cards = 12

  60. uri
    • one year ago
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    Oh...:D so aren't spades 13 in total? :P

  61. hartnn
    • one year ago
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    yes, there are 13 spades in all A,2,3,4......9,10, J, Q, K of spades <-----total =13 what made you ask this ?

  62. uri
    • one year ago
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    WHY ARE WE USING 1 THEN!! THAT MADE ME ASK.. :3

  63. whpalmer4
    • one year ago
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    1 = A

  64. hartnn
    • one year ago
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    because the question doesn't ask of only spades only spades = 13 its ask for a "4 of spade" which is unique

  65. uri
    • one year ago
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    Okay :P so we use *1?* so face cards is 12,5's are 4 so 12+4+1/52 =17/52 =0.32692

  66. hartnn
    • one year ago
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    https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcT-kzBGpMtaZYdLHrZ6Q2cyk9CyLyEvXysGlomM6aXTGfi3xql1Lw yes.

  67. hartnn
    • one year ago
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    if thats blurred http://www.geeksforgeeks.org/wp-content/uploads/cards.png

  68. uri
    • one year ago
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    Aren't you smart? :3

  69. hartnn
    • one year ago
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    O.o is that a part of the question ? (answer : P=1 :P)

  70. uri
    • one year ago
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    P =1? answer of what? :3

  71. hartnn
    • one year ago
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    of 'Aren't you smart?' nvm if you didn't get it.......

  72. Jack1
    • one year ago
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    lol

  73. uri
    • one year ago
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    So you mean you are *A 4 of spade smart*? :P

  74. Jack1
    • one year ago
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    probability = 100%

  75. terenzreignz
    • one year ago
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    Drawing a single card? Boring... :P

  76. uri
    • one year ago
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    Ha! Thanks @hartnn Bhaiya :D

  77. hartnn
    • one year ago
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    always welcome ^_^

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