Question

Two cards are drawn in a row without replacement. What is the probability of drawing three pink cards? (there are 10 pink cards & 4 of them are pink)

a.1/30
b.2/15
c.6/45
d.2/9

Answer 1

i was confused as to what they meant by two cards are drawn in a row, like is it 2 cards, then draw again, or is it draw one card, then another

Answer 2

they mean take a card out and do not replace it.

you say
(there are 10 pink cards & 4 of them are pink)

I assume you mean 10 cards, 4 being pink.

Answer 3

you start with 10 cards. after 1 pick, you have 9 cards. If the first was pink, you have 3 pink cards

Answer 4

but if they're only drawing 2 cards, then how are they gonna have any probablility of gettign 3 pink cards

Answer 5

they must mean pick 3?

Answer 6

see thats the part that confused me,

Answer 7

maybe they mean draw 2
then draw another 2
(a total of 4 cards)
in which case I'll have to think about it.

Answer 8

If I did it correctly, I get 5/42 which does not match any of your choices.
If you ever get the correct answer, post it

Answer 9

it's actually 1/30, my teacher didnt understand either, so she just gave me the answer :b

Answer 10

1/30 is what you get if you draw 3 cards, one at a time with no replacement:
(4/10)*(3/9)*(2/8)

Answer 11

oh, well idk, but the lesson is online so the teacher gets all the answers

Answer 12

FYI, chance of getting 1 pink with (4 pinks, 10 total) is 4/10
you now have 3 pinks out of 9 total in the deck.
the chance of getting the 2nd pink is (3 out 9) or 3/9

the chance of getting the 3rd pink is (2 out of 8) or 2/8
you multiply the probabilities to get the probability of getting 3 pinks in a row.