Posted by **Angie** on Saturday, November 24, 2012 at 1:51pm.

You come home after dark, and porch light is out. You cannot tell which key opens the door.. you randomly try the 5 keys on your ring, 2 keys open your door.

Draw a tree diagram for the experiment &

Find the probability of opening the door on the first or second try.

## Answer This Question

## Related Questions

- statistics - The probability that a certain door is locked is.6. The key to the ...
- Riddle - What has eighty eight keys, can't open a door
- Riddle - There are many keys but can't open a single door
- Theories and issues in working with school-age chi - The traditional term ...
- English - Scene: Jacob and Mary are at Jerome’s House, to return the engagement ...
- English-Please Help - Based on the context clues, what is the meaning of the ...
- Tech - What is special about the F and J keys on a standard keyboard? A. They ...
- English-Please Help - 3. Based on the context clues, what is the meaning of the ...
- brain teaser - You are standing outside a closed door. On the other side of the ...
- Math - Roger knows how many keys a piano has. He knows that some of the keys are...

More Related Questions