College

We appreciate your visit to A person is standing in a room that has 3 locked doors and there are three colored keys on a keyring one red one yellow. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!

A person is standing in a room that has 3 locked doors and there are three colored keys on a keyring: one red, one yellow, and one green. They have been provided the following information:

- Each of the green and the yellow keys can unlock only one door, but the red key can be used to unlock two of the doors.
- Once opened, the middle door is followed by an additional door whose key is not among the three keys.
- The first door can't be unlocked by the red key.
- The last door can't be unlocked by the green key.

The person has only one attempt to use the correct key and exit the room. Which of the following attempts is the right one?

A. Use the yellow key to open the first door.
B. Use the red key to open the middle door.
C. Use the green key to open the first door.
D. Use the red key to open the last door.

Answer :

The correct option is C.

Since a person is standing in a room that has 3 locked doors and there are three colored keys on a keyring: one red, one yellow and one green, and they have been provided the following information:

  • Each of the green and the yellow keys can unlock only one door, but the red key can be used to unlock two of the doors
  • Once opened, the middle door is followed by an additional door whose key is not among the three keys
  • The first door can't be unlocked by the red key
  • The last door can't be unlocked by the green key

And the person has only one attempt to use the correct key and exit the room, to determine which would be the correct attempt, the following logical reasoning must be performed:

The first door cannot be unlocked with the red key, since it opens two doors, it can open the second door and the third door.

The last door can also be unlocked with the yellow key, then: first door opens with the green key, second with the red key and third with the red and yellow keys.

Since a key is missing to open the middle door, two options remain: open the first door with the green key or the last door with the red or yellow keys.

Therefore, the correct option is C: Use the green key to open the first door.

Learn more about logic in https://brainly.com/question/2141979

Thanks for taking the time to read A person is standing in a room that has 3 locked doors and there are three colored keys on a keyring one red one yellow. We hope the insights shared have been valuable and enhanced your understanding of the topic. Don�t hesitate to browse our website for more informative and engaging content!

Rewritten by : Barada

Final answer:

The correct attempt would be to use the red key to open the middle door.

Explanation:

In this scenario, the person is standing in a room with 3 locked doors and has 3 keys - one red, one yellow, and one green. The information given states that the red key can unlock two of the doors, the yellow key can unlock one door, and the green key can unlock one door. It is also mentioned that the first door cannot be unlocked by the red key, and the last door cannot be unlocked by the green key.

Based on this information, the correct attempt to unlock the doors and exit the room would be to use the red key to open the middle door. This is because the red key can unlock two doors, and we know that the first door cannot be unlocked by the red key and the last door cannot be unlocked by the green key.

Learn more about Unlocking doors with colored keys here:

https://brainly.com/question/33231836

#SPJ11