Answers IQ test

Question 18

24 5 6 126 16 17 ? 266
Which number should replace the question mark?


The number in the middle of the first triangle is found with the folowing calculation: 24 * 5 + 6 = 126
The number in the middle of the second triangle is found with the folowing calculation: : 16 * 17 + -6 = 266
Therefore the question mark should be replaced with the number: -6

Question statistics

Question ID: 6TB4Um8P
Main category: Numerical Reasoning
Sub category: Math triangles
Difficulty Level: 17What is item difficulty?
Nr of times answered: 1159
Average IQ of people who answered this question: 120.43
Percentage of answers correct: 42.88%
Item Response Theory (IRT)What is Item Response Theory?
Item difficulty: 17 / 20What is item difficulty?
Discrimination: 2.63 What is item discrimination?
Point of Maximum Information: 125.42 What is Point of Maximum Information?
Item Characteristic Curve (ICC)
This Item Characteristic Curve shows the probability that a person with a given IQ level will correctly answer this question. This graph is based on the answers and the IQ levels of 1159 individual test takers who have answered this question.
Distractor AnalysisWhat is distractor analysis?
Average IQ of people who gave the correct answer: 124.03 Why does the average IQ of people who answer the questions differ per question?
Average IQ of people who gave an incorrect answer: 117.01
Response Time AnalysisWhat is response time analysis?
Optimal time to spend on question: 60 seconds What is the optimal response time?
Optimal time to spend on question
The graph illustrates the last 250 correct and incorrect answers to this question, as well as the time it took for test takers to arrive at the answer. Using this data, an average optimal time for answering the question is calculated. However, it should be noted that the optimal time may vary for individual test takers.

Time spent: you used 113 seconds to answer this question