Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
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.
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define a strictly increasing subsequence.
💡 Hint: Think about an example where numbers go up.
Question 2
Easy
What does the pigeonhole principle state?
💡 Hint: Consider how this might apply to people and birthdays.
Practice 4 more questions and get performance evaluation
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is a strictly increasing subsequence?
💡 Hint: Think of a climbing path.
Question 2
Does the pigeonhole principle allow for items to fit without overlap?
💡 Hint: Consider how many people can fit into a car.
Solve and get performance evaluation
Push your limits with challenges.
Question 1
Provide a proof using the pigeonhole principle to show that among any 10 individuals selected randomly, there must be at least two who share the same birthday month.
💡 Hint: Think of how many months the year has versus the number of persons.
Question 2
Given a sequence of 10 distinct integers, demonstrate using theorems related to subsequences that there must be increasing subsequences of at least 4 numbers.
💡 Hint: Think about how they can be grouped and compared in ranges.
Challenge and get performance evaluation