10th Grade Modular Inverses Quizzes , Questions & Answers

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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: 12 | Last updated: Dec 9, 2025

Sample Question 1
If a × b ≡ 1 (mod n), then b is:

A multiple of a

A divisor of n

The modular inverse of a mod n

Always equal to n – a

Sample Question 2
Which number has no modular inverse mod 12?

5

7

6

11

Sample Question 3
If 3 × x ≡ 1 (mod 13), what is x?

3

4

9

10

10th Grade Modular Inverses Quizzes , Questions & Answers

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