帰納的論理

帰納的論理は、一般的な文や前提から特定の結論を導き出す論理的思考の方法です。これは、より広範な、一般的な情報からより狭い、より具体的な結論に至る推論の形式です。帰納的論理は、数学、哲学、さまざまな科学分野でよく使用されています。受験問題の多くが、文脈を把握し論理的に思考で正解を導き出す手法を取っています。つぎの問題は論理的思考力トレーニングです。

 

 

 

帰納的論理法問題

 

Problem 1

A sign on a store’s door reads, “No shirt, no shoes, no service.” Tom enters the store without shoes. The store owner asks him to leave.

What conclusion can Tom draw from this situation?

A) The store owner is not polite.
B) Tom forgot to wear a shirt.
C) Tom is not allowed to enter the store.
D) Tom needs to wear shoes to enter the store.

 

Problem 2

In a math competition, the rules state that all participants must be in grade 9 or higher. Sarah, a grade 8 student, tried to enter the competition, but she was not allowed to participate.

What can Sarah deduce from this situation?

A) She is not good at math.

B) She didn’t want to participate.

C) She is in grade 9 or higher.

D) Grade 8 students are not allowed to participate.

 

Problem 3

The residents of a small town have been experiencing a series of mysterious thefts. The local detective, Sarah, has been investigating and has made the following observations:

Each theft occurred on a Friday night.
Each victim had posted their vacation plans on social media just before the theft.
The stolen items were always valuable electronics.

What conclusion can Sarah draw based on her observations?

A) The thief is a local resident.
B) The thief only targets people who post on social media.
C) The thief only steals on Fridays.
D) The thief is always after valuable electronics.

 

Problem 4

A teacher gives a challenging test to her students. She explains that passing the test requires both studying and understanding the material. John studied hard but did not pass the test. Sarah, on the other hand, passed the test without studying at all.

What conclusion can be drawn from the teacher’s statement?

 

A) John didn’t understand the material.
B) John didn’t study hard enough.
C) Sarah is smarter than John.
D) Studying is not necessary to pass the test.

 

Problem 5

A family is planning a vacation trip. The parents tell their children that they can go on the trip only if they finish their homework and clean their rooms. The children finished their homework, but their rooms are still messy.

 

What conclusion can the children draw from their parents’ condition?

A) The parents are unreasonable.
B) The parents are not going on the trip.
C) The children are not going on the trip.
D) Finishing homework is more important than cleaning the rooms.

 

Problem 6

A science fiction author has written a series of books featuring time travel. In each book, the protagonist uses a different method of time travel. The author has claimed that each method used in the books is theoretically possible.

What conclusion can be drawn from the author’s statement?

A) Time travel is real.
B) The author is a scientist.
C) The methods of time travel in the books are theoretically possible.
D) The protagonist in the books actually time-travels.

 

Problem 7

A restaurant has a sign that says, “Free dessert with any meal if you bring a friend.” Alice goes to the restaurant, orders a meal, and brings her friend Bob with her. However, the restaurant staff does not give her a free dessert.

What conclusion can Alice draw from the restaurant’s sign?

 

A) The restaurant only provides free desserts on certain days.
B) Alice and Bob are not friends.
C) The restaurant’s sign is misleading.
D) Alice didn’t order the right meal.

 

Answers

Problem1:D)Problem2:D)Problem3:D) Problem4:A) Problem 5:C) Problem 6:C)Problem 7:C)