Modular Inverses Quizzes, Questions & Answers

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When we talk about multiplicative inverse in mathematics, we are in other words talking about using a reciprocal for a number x which results in 1 when multiplied by the number x. Pretty confusing right? Well, with enough...

Questions: 5  |  Attempts: 211   |  Last updated: Mar 20, 2025
  • Sample Question
    Solve the following:6/15 x = 60
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In this quiz, you’ll explore what it means for a number to have a modular inverse and when an inverse exists. You’ll test simple cases, practice checking whether numbers are invertible, and see how multiplication...

Questions: 10  |  Attempts: 10   |  Last updated: Oct 13, 2025
  • Sample Question
    Which number is the inverse of 3 mod 7?
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Modular inverses follow fascinating rules based on number properties. In this quiz, you’ll discover the conditions for an inverse to exist, how greatest common divisors (GCDs) play a role, and why every nonzero number has...

Questions: 10  |  Attempts: 10   |  Last updated: Oct 13, 2025
  • Sample Question
    If a × b ≡ 1 (mod n), then b is:
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