math

posted by .

a card is picked from a pack containing 52 cards . it is then replaced and a second card is picked. Find the probability that
a)both cards are the seven of diamonds,
b)the first card is a heart and the second a spade.
c)one card is from a black suit and other is from a
red suit
d) at least one card is a queen

  • math -

    I will do two:
    b) Pr= 13/52 * 13/52
    d)Pr(one a queen)= pr(two queens)+pr(one queen)
    Pr(QQ)+Pr(QN)+Pr(NQ)
    4/52*4/52 + 4/52*48/52 + 4/52*48/52
    = (16+2*4*48)/52*52=.148 check it.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    Two cards are drawn without replacement from a standard deck of 52 cards. Find the probability a) both cards are red ,b) both cards are the same color, c) the second card is a king given that the first card is a queen, d) the second …
  2. math

    Two cards are drawn without replacement from a standard deck of 52 cards. Find the probability a) both cards are red ,b) both cards are the same color, c) the second card is a king given that the first card is a queen, d) the second …
  3. math

    Two cards are drawn without replacement from a standard deck of 52 cards. Find the probability a) both cards are red ,b) both cards are the same color, c) the second card is a king given that the first card is a queen, d) the second …
  4. math

    Two cards are drawn without replacement from a standard deck of 52 cards. Find the probability a) both cards are red ,b) both cards are the same color, c) the second card is a king given that the first card is a queen, d) the second …
  5. Stats

    Directions: Suppose you have a standard deck 52 cards (4 suits: hearts, diamonds, clubs, and spades each suit has 13 cards (1/4 of the deck) and those 13 cards include one ace,and numbers 2 through 10 and 3 face cards: a jack a queen …
  6. Stats

    Suppose you have a standard deck 52 cards (4 suits: hearts, diamonds, clubs, and spades each suit has 13 cards (1/4 of the deck) and those 13 cards include one ace,and numbers 2 through 10 and 3 face cards: a jack a queen and king) …
  7. math

    A card is drawn from an ordinary deck of 52 cards, and the result is recorded on paper. The card is then returned to the deck and another card is drawn and recorded. Find the probability that the following occurs: a) the first card …
  8. Algebra 2

    A card is drawn at random from a full pack of playing cards. It is not put back. A second card is then drawn from the same pack. (a) Find the probability that: (i) both cards are sevens (ii) neither card is a seven (iii) at least one …
  9. math

    In a pack of 52 cards, 4 of the cards are Kings. The first card is picked, the results are recorded and the card is returned to the deck. Then the second card is picked. Find the probability of picking two kings. Be sure to represent …
  10. statistics

    : Two cards are drawn from a well-shuffledordinary pack of 52 cards. The first card is replaced before selecting the second card. Find the following probabilities. (i) Both are kings (ii) First is king and second is queen (iii) One …

More Similar Questions