International Baccalaureate Math Studies: P&S HELP

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Ti-Pro.doc.

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Could someone help me with this problem:
Two marbles are drawn in succession from a box containing 2 Purple marbles and 5 Green marbles.
Determine the probability that the two marbles are different colors if:
  • The first marble is replaced [/*:m:uyr8wajw]
  • The first marble is NOT replaced.[/*:m:uyr8wajw]
Click to expand...

Could you show me how to represent this on a Tree Diagram.

Thx in advance.
 
Ti-Pro.doc. said:
Could someone help me with this problem:
Two marbles are drawn in succession from a box containing 2 Purple marbles and 5 Green marbles.
Determine the probability that the two marbles are different colors if:
  • The first marble is replaced [/*:m:3w56thzt]
  • The first marble is NOT replaced.[/*:m:3w56thzt]
Click to expand...

Could you show me how to represent this on a Tree Diagram.

Thx in advance.
Click to expand...

Please show us your work, indicating exactly where you are stuck - so that we know exactly where to begin to help you.
 
Subhotosh Khan said:
[quote="Ti-Pro.doc.":1c8upo9q]Could someone help me with this problem:
Two marbles are drawn in succession from a box containing 2 Purple marbles and 5 Green marbles.
Determine the probability that the two marbles are different colors if:
  • The first marble is replaced [/*:m:1c8upo9q]
  • The first marble is NOT replaced.[/*:m:1c8upo9q]
Click to expand...

Could you show me how to represent this on a Tree Diagram.

Thx in advance.
Click to expand...

Please show us your work, indicating exactly where you are stuck - so that we know exactly where to begin to help you.[/quote:1c8upo9q]

sadly i'm stuck st the begining...I missed the notes that we took in class because i was absent... was able to get this assignment through eSis Parent Assist but not the notes.
 
Hello, Ti-Pro.doc.!

Two marbles are drawn in succession from a box
. . containing: 2 Purple marbles and 5 Green marbles.
Determine the probability that the two marbles are different colors if:

The first marble is replaced.
Click to expand...
. . . \(\displaystyle \begin{array}{ccccccc}& & & * \\ & & \frac{2}{7}\swarrow & & \searrow\frac{5}{7} \\ & P & & & & G \\ & \frac{2}{7}\swarrow\searrow\frac{5}{7} & & & & \frac{2}{7}\swarrow\searrow\frac{5}{7} \\ P && G && P && G \end{array}\)


The first marble is NOT replaced.
Click to expand...

. . . \(\displaystyle \begin{array}{ccccccc}& & & * \\ & & \frac{2}{7}\swarrow & & \searrow\frac{5}{7} \\ & P & & & & G \\ & \frac{1}{6}\swarrow\searrow\frac{5}{6} & & & & \frac{2}{6}\swarrow\searrow\frac{5}{6} \\ P && G && P && G \end{array}\)

 
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