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Assumption Inference - Absolute-Beginner Level: core concept mastery Assumption Inference ABSOLUTE BEGINNER

This skill primer 🌟 worksheet focuses on Assumption Inference - a key topic in Inference. You'll solve 20 absolute-beginner-level problems (Worksheet 1 of 10). The primary focus is on core concept mastery. Master assumption inference problems, assumption inference reasoning questions, and assumption inference practice through systematic practice.

📝 Worksheet 1 of 10 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Absolute Beginner level

What you'll learn in this worksheet:
Your progress through Assumption Inference
Worksheet 1 of 10 (0% complete)

Question 1

Consider this argument: "She scored 100% on the test. She must be very intelligent." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: High test scores indicate high intelligence (and the test was a valid measure of intelligence)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 2

Consider this argument: "The ancient civilization built huge monuments, so they must have had advanced technology." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: Advanced technology was necessary to build the monuments (and no other explanation like massive labor forces exists)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 3

Consider this argument: "The ancient civilization built huge monuments, so they must have had advanced technology." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: Advanced technology was necessary to build the monuments (and no other explanation like massive labor forces exists)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 4

Consider this argument: "My phone battery died quickly. This new update must have caused it." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: The update is the cause of the battery drain (and no other apps or settings changed)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 5

Consider this argument: "The ancient civilization built huge monuments, so they must have had advanced technology." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: Advanced technology was necessary to build the monuments (and no other explanation like massive labor forces exists)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 6

Consider this argument: "The company's profits doubled. The CEO must be doing great work." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: CEO performance directly affects company profits (and no external factors like market conditions caused the increase)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 7

Consider this argument: "She scored 100% on the test. She must be very intelligent." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: High test scores indicate high intelligence (and the test was a valid measure of intelligence)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 8

Consider this argument: "My phone battery died quickly. This new update must have caused it." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: The update is the cause of the battery drain (and no other apps or settings changed)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 9

Consider this argument: "The team won the championship. They must have the best coach." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: Championship wins indicate best coaching (and the coach was the primary factor in the win)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 10

Consider this argument: "Every time I wear this shirt, my team wins. This shirt brings good luck." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: The shirt causally influences game outcomes (and correlation implies causation)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 11

Consider this argument: "The ancient civilization built huge monuments, so they must have had advanced technology." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: Advanced technology was necessary to build the monuments (and no other explanation like massive labor forces exists)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 12

Consider this argument: "My phone battery died quickly. This new update must have caused it." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: The update is the cause of the battery drain (and no other apps or settings changed)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 13

Consider this argument: "The new restaurant is always crowded. The food must be excellent." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: Crowded restaurants indicate excellent food (and not factors like location, price, or marketing)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 14

Consider this argument: "Every time I wear this shirt, my team wins. This shirt brings good luck." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: The shirt causally influences game outcomes (and correlation implies causation)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 15

Consider this argument: "John got promoted quickly. He must have worked very hard." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: Hard work leads to quick promotion (and no other factors like luck, connections, or timing influenced the promotion)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 16

Consider this argument: "The team won the championship. They must have the best coach." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: Championship wins indicate best coaching (and the coach was the primary factor in the win)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 17

Consider this argument: "John got promoted quickly. He must have worked very hard." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: Hard work leads to quick promotion (and no other factors like luck, connections, or timing influenced the promotion)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 18

Consider this argument: "The new restaurant is always crowded. The food must be excellent." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: Crowded restaurants indicate excellent food (and not factors like location, price, or marketing)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 19

Consider this argument: "Every time I wear this shirt, my team wins. This shirt brings good luck." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: The shirt causally influences game outcomes (and correlation implies causation)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.

Question 20

Consider this argument: "Every time I wear this shirt, my team wins. This shirt brings good luck." What unstated assumption must be true for this reasoning to be valid?
The argument makes a hidden assumption: The shirt causally influences game outcomes (and correlation implies causation)

This assumption is not explicitly stated but is necessary for the conclusion to follow from the premises. If this assumption is false, the argument becomes weak or invalid.
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