10th Grade Modular Inverses Quizzes, Questions & Answers

Top Trending Modular Inverses Quizzes

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: Nov 12, 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