Question

A single card is chosen at random from a shuffled standard fifty-two card deck (no jokers). Find the following probabilities.
1)What is the probability that the card is black?
2)What is the probability that the card is a heart?
3)What is the probability that the card is either a diamond or a 4?
4)What is the probability that the card is at least a 7 and at most a 9? That is, P(≥7∩≤9)

Answer 1

I guess
1) 1/2
2) 1/4
3) 17/52 or 16/52 i don't know for sure
4)21/52

Answer 2

if we out all the diamonds and 4s into a pile, how many cards would be in the pile?

Answer 3

if w put all the 7s, 8s and 9s in a pile, how many would be in the pile?

Answer 4

21 might be a typo ... 12/52 seems better for that one

Answer 5

k

Answer 6

im a bit confuse 12/52 is from which question?

Answer 7

the one that has 21 in it ...

Answer 8

question 4) ?

Answer 9

\[P \left( A \cup B \right)=P \left( A \right)+P \left( B \right)\]-P(A intersection B)

Answer 10

all are correct except for 4 ?

Answer 11

if we put all the diamonds and 4s into a pile, how many cards would be in the pile?

Answer 12

there are 13 diamond and 4 (club diamond, heart and spade)

Answer 13

13 diamonds, plus 1 card from each of the other 3 suits

13+3

Answer 14

16/52

Answer 15

yes

Answer 16

ok

Answer 17

if we take a 7, 8, and 9 from each suit ... so 3 cards out of 4 suits would be how many cards?

Answer 18

12 ?

Answer 19

yes, so 12/52 for that last one .. not 21/52

Answer 20

ok i see

Answer 21

now we are done here ?

Answer 22

the rest are fine, so yeah

Answer 23

thank you so much for the help

Answer 24

good luck :)