Question

Will fan and medal if you help!!!

Answer 1

How many "red cards" are there in a standard deck of cards ?

Answer 2

52

Answer 3

http://www.2classnotes.com/images/10/mathematics/probability/playing_cards.gif

Answer 4

Total cards are 52,
how many of them are "red" ?

Answer 5

26

Answer 6

Good, how many of those "red cards" are "Aces" ?

Answer 7

2

Answer 8

Very good, so the probability of drawing a "red Ace" first time is :
\[\frac{2}{52}\]

After that drawing an Ace is
\[\frac{3}{51}\]

Multiply them to get the total probability
\[\frac{2}{52}\times \frac{3}{51}\]

simplify

Answer 9

so 1/442

Answer 10

Yes drag the first box and place it before 1/442

Answer 11

i did

Answer 12

Lets look at second box

Answer 13

look at the deck of cards again
how many of them are either "3" or "5" ?

Answer 14

3 = 2
5= 2

Answer 15

count them again

Answer 16

count both red and black

Answer 17

ok so 3=4
5=4

Answer 18

So, the cards in favor are 8
therefore the probability of drawing "3" or "5" is
\[\frac{8}{52}\]

Similarly, after putting the drawn card back in the deck, the probability of drawing "4" or "6" is
\[\frac{8}{52}\]

Multiply them to get the total probability

Answer 19

so 4/169

Answer 20

Yep!

Answer 21

see if you can try the problem in 3rd box