Question

We have a small deck of ten cards. Five of the cards are red, three are blue and two are green. We randomly select four cards from the deck with replacement. That is, after we select a card and record the colour, we put the card back in the deck and thoroughly shuffle them before we select another card.

Answer 1

make a tree diagram

Answer 2

how should i make a tree diagram for this probability?

Answer 3

http://bit.ly/141H2wI

Answer 4

help please

Answer 5

What is the probability that the rst two selected cards are the same colour?

Answer 6

first

Answer 7

are ut here?

Answer 8

hello?

Answer 9

Did the full question ask you to make a tree diagram?

Answer 10

no

Answer 11

What is the probability that the rst two selected cards are the same colour?

Answer 12

thats the question

Answer 13

What is the probability that the first two selected cards are the same colour?

Answer 14

There are three possible events to consider:
1. P(red + red) = 5/10 * 5/10
2. P(blue + blue) = 3/10 * 3/10
3. P(green + green) = 2/10 * 2/10
These three events are mutually exclusive, therefore the probability of the first two selected cards being the same color is the sum of the above three probabilities.

Answer 15

@yashar806 Have you done the calculation yet?

Answer 16

Required probability is
\[0.5^{2}+0.3^{2}+0.2^{2}=you\ ca\ calculate\]

Answer 17

you can*

Answer 18

yep