正答率1%の漸化式【難問!?】

[Publication Announcement] "28 Great Mathematical Questions You'll Want to Solve at Least Once in Your Life" (Kanki Publishing) will be published on November 20th!! ↓You can pre-order from the link below↓ https://amzn.to/40Go0OF From the more than 1,000 questions that have been explained in "PASSLABO" and "MathLABO" over the past five years, we have carefully selected good questions that will give you an inspiring experience and provide in-depth explanations. We have a wide range of questions, from those that even elementary school students can enjoy to those that are difficult for exam takers and adults to try, so please feel free to enjoy them. *As a special bonus for book purchasers only, you will also receive "3 types of good questions x explanatory videos x handwritten explanations" that are not available on YouTube. Please enjoy that as well. #PASSLABO #GoodMathematicalQuestions

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[28 Great Mathematical Questions] has been published! (With bonus)
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[28 Great Mathematical Questions] has been published! (With bonus)

[0% correct answer rate] Integer problems that train your thinking
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[0% correct answer rate] Integer problems that train your thinking

Integer Problems that Determine Pass or Fail ⑤ [Super Good Questions Worth 80 Points per Question...
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Integer Problems that Determine Pass or Fail ⑤ [Super Good Questions Worth 80 Points per Question...

All solutions with explanations! Explanation of all basic forms of recurrence relations that appe...
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All solutions with explanations! Explanation of all basic forms of recurrence relations that appe...

We're 99.9% sure this pattern is true, but no one can prove it
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We're 99.9% sure this pattern is true, but no one can prove it

The operation that can kill a legendary difficult problem in an instant is too bad.
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The operation that can kill a legendary difficult problem in an instant is too bad.

You Know This Song (but the Orchestra Doesn’t) | Jacob Collier & VSO School of Music Orchestra | TED
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You Know This Song (but the Orchestra Doesn’t) | Jacob Collier & VSO School of Music Orchestra | TED

From Child Prodigy to Winning Fields Medal, Nobel of Math
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From Child Prodigy to Winning Fields Medal, Nobel of Math

The common test without guidance had too many good questions [4-term recurrence formula]
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The common test without guidance had too many good questions [4-term recurrence formula]

[Solve it in 30 seconds] A super-difficult question that has students stuck in the mud (2024 Chib...
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[Solve it in 30 seconds] A super-difficult question that has students stuck in the mud (2024 Chib...

[Legendary Question] Logical Pitfalls (2025 Tohoku University Entrance Exam)
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[Legendary Question] Logical Pitfalls (2025 Tohoku University Entrance Exam)

【数学B】漸化式とは？ 〜新聞記者たちの物語〜　数列【14話】
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【数学B】漸化式とは？ 〜新聞記者たちの物語〜　数列【14話】

[Interesting Mathematics Entrance Exams] A question that will improve your thinking skills (2016 ...
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[Interesting Mathematics Entrance Exams] A question that will improve your thinking skills (2016 ...

[Eng Sub] Can You Expand x+1 Raised to an Irrational Power?
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[Eng Sub] Can You Expand x+1 Raised to an Irrational Power?

[Shocking Tokyo University mock exam] Difficult questions with an average score of 0.8 points
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[Shocking Tokyo University mock exam] Difficult questions with an average score of 0.8 points

Tokyo University's problem: calculations are too tricky without creativity!
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Tokyo University's problem: calculations are too tricky without creativity!

Best Explanation of Gradient, Divergence and Curl
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Best Explanation of Gradient, Divergence and Curl

# 146. (★★★) 4step 数B 問87 (P22)の類題（漸化式/分数型）弘前大
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# 146. (★★★) 4step 数B 問87 (P22)の類題（漸化式/分数型）弘前大

【京大模試】難問に変えてみた（mod3禁止）
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【京大模試】難問に変えてみた（mod3禁止）

All 7 Dimensions Explained in Detail (From 0D to Infinity)
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All 7 Dimensions Explained in Detail (From 0D to Infinity)