Practice Applying Restrictions And Solving (18.4.2) - Subsequence Existence
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Applying Restrictions and Solving

Practice - Applying Restrictions and Solving

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Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What defines a strictly increasing sequence?

💡 Hint: Think of a sequence going up.

Question 2 Easy

Identify a subsequence in (2, 4, 1, 5, 3).

💡 Hint: Look for numbers you can skip.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What defines a strictly increasing sequence?

Numbers go up
Numbers go down
Numbers stay the same

💡 Hint: Think of climbing a staircase.

Question 2

True or False: A subsequence must consist of consecutive numbers.

True
False

💡 Hint: Recall the definition.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Find a strictly increasing subsequence in the set {1, 8, 5, 11, 6, 9}.

💡 Hint: Pick numbers that move upward.

Challenge 2 Hard

Show using the pigeonhole principle that in any group of 10 people with distinct heights, at least two must have a sequence of either increasing or decreasing heights.

💡 Hint: Link heights with subsequences.

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Reference links

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