1.
A company claims that its new air purifier removes 99.9% of airborne pollutants. In a test, the air quality in a room improved significantly after using the purifier. Which of the following, if true, would most weaken the company's claim?
The test was conducted in a controlled laboratory environment
The purifier is more expensive than competing products
The test only measured a limited number of common pollutants
Other air purifiers on the market claim similar effectiveness
2.
A social media platform changes its algorithm to prioritize posts from friends and family. User engagement increases by 30% in the following month. What is the most probable effect of this change?
Users see more relevant content
More advertisements are shown
The platform has fewer technical issues
Users spend less time on the platform
3.
In a certain code, 467 means 'leaves are green', 485 means 'green is good' and 639 means 'they are playing'. Which digit stands for 'are'?
4
6
7
9
4.
In a city, neighborhoods with more public art installations reported higher levels of community pride. What can be inferred?
Public art installations are the only factor affecting community pride
Neighborhoods without public art always have low community pride
There may be a relationship between public art installations and increased community pride
High community pride causes cities to install more public art
5.
If it's raining, then the ground is wet. The ground is wet. Therefore, it must be raining. This argument is:
Valid and sound
Valid but not necessarily sound
Invalid but possibly true
Invalid and false
6.
COFFEE : CAFFEINE :: SPINACH : ?
Green
Vegetable
Iron
Leaf
7.
SYCOPHANT : CRITIC ::
Flatterer : Judge
Follower : Leader
Admirer : Detractor
Supporter : Opponent
8.
In a certain town, all the houses on Elm Street have red roofs. John's house is on Elm Street. What can be inferred about John's house?
John's house has a red roof
John's house is the only one with a red roof
John's house is the biggest on Elm Street
John's house is made of brick
9.
A box contains 3 red balls, 4 blue balls, and 5 green balls. Two balls are drawn at random without replacement. What is the probability that the balls are of different colors?
37/55
31/66
41/66
47/66
10.
"The majority of climate scientists agree that human activity is contributing to climate change. Therefore, it must be true." What logical fallacy is present in this argument?
Appeal to authority
Bandwagon fallacy
False cause
Begging the question
Questions Answered: 0/10