Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does a pixel represent in an image?
💡 Hint: Think about the smallest piece of an image.
Question 2
Easy
How can a grayscale image be represented?
💡 Hint: Remember the image has only one value per pixel.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does a grayscale image use for representation?
- 1D array
- 2D array
- 3D array
💡 Hint: Remember the structure of grayscale images.
Question 2
True or False: A color image is represented as a 2D array.
- True
- False
💡 Hint: Think about how colors are combined.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a grayscale image matrix of size 4x4, write code that inverts the pixel values.
💡 Hint: Consider what an inverted image would look like.
Question 2
You are given a 3D color image matrix. Design a function to separate out the Red channel and return it as a 2D matrix.
💡 Hint: Each pixel has three values—how do you access just one?
Challenge and get performance evaluation