Question

When exactly is N (mod ab) the same as N (mod a)? (2010 AMC 10A Q24)

score 137 · Answer 1 · 2026-03-30 23:11:34

137

Views

When exactly is N (mod ab) the same as N (mod a)? (2010 AMC 10A Q24)

Published on 30 Mar 2026 - 23:11

score 94 · Answer 2 · 2026-03-28 13:59:23

94

Views

Minimal integer to make a rational into an integer

Published on 28 Mar 2026 - 13:59

score 71 · Answer 3 · 2026-04-02 21:44:49

71

Views

Solution to linear equation system using modulo 251?

Published on 02 Apr 2026 - 21:44

score 189 · Answer 4 · 2026-03-26 14:28:08

189

Views

$x^2 + 4x - \lambda +2 \equiv 0 \pmod 7$

Published on 26 Mar 2026 - 14:28

score 544 · Answer 5 · 2026-03-25 20:07:35

544

Views

Idempotent elements in a modulo n ring

Published on 25 Mar 2026 - 20:07

score 218 · Answer 6 · 2026-03-28 16:18:42

218

Views

How to solve congruence using diophantine equation?

Published on 28 Mar 2026 - 16:18

score 2.3k · Answer 7 · 2019-06-17 13:56:06

2.3k

Views

How to solve following problem?

Published on 17 Jun 2019 - 13:56

score 77 · Answer 8 · 2019-06-17 18:51:17

77

Views

When does $n-2$ divide $n-5$?

Published on 17 Jun 2019 - 18:51

score 73 · Answer 9 · 2026-03-26 05:16:49

73

Views

Prove there exists $a$ such that $a^\frac{n-1}{2} \neq (\frac{a}{n}) (\text{mod } n)$

Published on 26 Mar 2026 - 5:16

score 185 · Answer 10 · 2026-03-25 18:47:21

185

Views

How to solve Chinese Remainder Theorem with exponantial values

Published on 25 Mar 2026 - 18:47

score 383 · Answer 11 · 2019-06-18 19:30:20

383

Views

How to solve congruence with two variables x and y

Published on 18 Jun 2019 - 19:30

score 413 · Answer 12 · 2019-06-18 20:12:07

413

Views

How to prove that $\lim\limits_{n\rightarrow \infty} \frac{1}{n^2}\sum\limits_{k=1}^{n}(n \bmod k)=1-\frac{\pi^2}{12}$?

Published on 18 Jun 2019 - 20:12

score 479 · Answer 13 · 2019-06-18 20:32:37

479

Views

Use of congruence arithmetic laws to solve linear congruences

Published on 18 Jun 2019 - 20:32

score 501 · Answer 14 · 2026-03-26 13:01:02

501

Views

How does one prove that $1 + a + a^2 + ... +a^{\phi(n)-1} = 0$ mod $n$ if $a$ and $a-1$ are both units mod n?

Published on 26 Mar 2026 - 13:01

score 129 · Answer 15 · 2019-06-19 01:36:01

129

Views

Solving equations with mod 1 numbers and multiple variables

Published on 19 Jun 2019 - 1:36

List Question

When exactly is N (mod ab) the same as N (mod a)? (2010 AMC 10A Q24)

Minimal integer to make a rational into an integer

Solution to linear equation system using modulo 251?

$x^2 + 4x - \lambda +2 \equiv 0 \pmod 7$

Idempotent elements in a modulo n ring

How to solve congruence using diophantine equation?

How to solve following problem?

When does $n-2$ divide $n-5$?

Prove there exists $a$ such that $a^\frac{n-1}{2} \neq (\frac{a}{n}) (\text{mod } n)$

How to solve Chinese Remainder Theorem with exponantial values

How to solve congruence with two variables x and y

How to prove that $\lim\limits_{n\rightarrow \infty} \frac{1}{n^2}\sum\limits_{k=1}^{n}(n \bmod k)=1-\frac{\pi^2}{12}$?

Use of congruence arithmetic laws to solve linear congruences

How does one prove that $1 + a + a^2 + ... +a^{\phi(n)-1} = 0$ mod $n$ if $a$ and $a-1$ are both units mod n?

Solving equations with mod 1 numbers and multiple variables

Trending Questions

Popular # Hahtags

Popular Questions