## Practice Questions

### Version 1:

Last summer, as with every summer, Oshin and Reena made exactly one long trip together to a town neither of them had visited before. For their long summer trips, Oshin and Reena have always chosen to visit a town that Reena would have liked to visit—unless Oshin had been to that town before. Reena had visited Town F and Town G before—and Oshin had never visited Town J or Town K. Did Oshin and Reena visit one of these four towns last summer?

(1) Reena had never visited Town J, and Oshin had never visited Town F.

(2) Reena would have liked to visit either Town J or Town K.

### Version 2:

Last summer, as with every summer, Oshin and Reena made exactly one long trip together. However, unlike previous years, this time, they decided to visit a town that was recommended by their close friends and that either Oshin or Reena, but not both, had visited before. Did Oshin and Reena visit one of these four towns last summer? Oshin had visited Town F and Town G before, while Reena had never visited Town J or Town K.

(1) Among the towns recommended by their friends were Town F and Town J.

(2) Reena prefers visiting towns that Oshin has already explored to have a familiar guide.

## Cheat Sheet for practice questions

### Version 1

St2: Reena would have liked to visit either Town J or Town K.

J | K | |

R wish? | Yes | yes |

R not visited? |

Don’t know if she visited these two. So, not sufficient

St1 and 2:

J | K | |

R wish? | Yes, from st2. | Yes, from st2. |

R not visited? | Yes, from st1. |

Yes, they visited one of the four towns for sure. So, C is the correct answer.

### Version 2

Last summer, as with every summer, Oshin and Reena made exactly one long trip together. However, unlike previous years, this time, they decided to visit a town that was recommended by their close friends and that either Oshin or Reena, but not both, had visited before. Did Oshin and Reena visit one of these four towns last summer? Oshin had visited Town F and Town G before, while Reena had never visited Town J or Town K.

(1) Among the towns recommended by their friends were Town F and Town J.

(2) Reena prefers visiting towns that Oshin has already explored to have a familiar guide.

- Condition
- 1: recommended by friends

- 2: Both should not have visited. One visit is ok.

- Information

Oshin | Reena | |

F | Yes | |

G | Yes | |

J | No | |

K | No |

- Inference
- J and K are surely in the running since Reena had not visited them.

- F and G may not be in the running:
- If Reena had visited, then not in running.

- If Reena had not visited, then in the running.

- Framework
- For J and K
- Did the friends recommend?

- For F and G
- Did the friends recommend?

- Did Reena not visit them?

- For J and K

Oshin | Reena | Recommendation | |

F | Yes | Need | Need |

G | Yes | Need | Need |

J | Don’t care | No | Need |

K | Don’t care | No | Need |

- Execution
- Statement 1:

Oshin | Reena | Recommendation | |

F | Yes | Need | Yes |

G | Yes | Need | Need |

J | Don’t care | No | Yes |

K | Don’t care | No | Need |

Since J is certainly a choice, even if F isn’t, we can answer the question that yes, they went to one of these 4 towns. So, AD.

- Statement 2: Reena prefers visiting towns that Oshin has already explored, to have a familiar guide.
- Does not matter. We don’t have any information about the need for cells, and hence not sufficient.

- This may have helped if we had a choice between two towns.

- Answer = A.

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