Question

Maximum number of guaranteed coins to get in a "30 coins in 3 boxes" puzzle

score 1.2k · Answer 1 · 2026-04-04 02:59:02

1.2k

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Maximum number of guaranteed coins to get in a "30 coins in 3 boxes" puzzle

Published on 04 Apr 2026 - 2:59

score 107 · Answer 2 · 2026-04-06 06:30:10

107

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Interesting number theoretical game

Published on 06 Apr 2026 - 6:30

score 92 · Answer 3 · 2026-04-08 22:25:36

92

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How do I show that if $\boldsymbol{a_1 a_2 a_3\cdots a_n \mid k}$ then each variable divides $\boldsymbol k $?

Published on 08 Apr 2026 - 22:25

score 2.8k · Answer 4 · 2026-04-08 20:26:38

2.8k

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Using only the digits 2,3,9, how many six-digit numbers can be formed which are divisible by 6?

Published on 08 Apr 2026 - 20:26

score 43 · Answer 5 · 2026-03-29 10:19:54

43

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Algebra Proof including relative primes.

Published on 29 Mar 2026 - 10:19

score 812 · Answer 6 · 2026-04-09 21:00:35

812

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How do I show that any natural number of this expression is a natural linear combination?

Published on 09 Apr 2026 - 21:00

score 441 · Answer 7 · 2026-03-30 11:16:21

441

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Counting the number of solutions of the congruence $x^k\equiv h$ (mod q)

Published on 30 Mar 2026 - 11:16

score 88 · Answer 8 · 2026-03-30 11:20:00

88

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algebraic integers of $x^4 -10x^2 +1$

Published on 30 Mar 2026 - 11:20

score 1.1k · Answer 9 · 2026-03-31 18:28:17

1.1k

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What exactly is the definition of Carmichael numbers?

Published on 31 Mar 2026 - 18:28

score 111 · Answer 10 · 2026-04-07 16:36:33

111

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Number of divisors 888,888.

Published on 07 Apr 2026 - 16:36

score 256 · Answer 11 · 2026-04-02 06:12:42

256

Views

Prove that if three real numbers $a, b, c$ satisfy $a^2+b^2+c^2=ab+bc+ac$, then $a=b=c$.

Published on 02 Apr 2026 - 6:12

score 93 · Answer 12 · 2026-04-01 02:02:13

93

Views

Alteration of digits - Smallest number

Published on 01 Apr 2026 - 2:02

score 483 · Answer 13 · 2026-04-08 22:24:28

483

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A congruence with the Euler's totient function and sum of divisors function

Published on 08 Apr 2026 - 22:24

score 256 · Answer 14 · 2026-04-02 07:13:52

256

Views

Möbius inversion formula?

Published on 02 Apr 2026 - 7:13

score 74 · Answer 15 · 2026-04-08 21:32:32

74

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Considering a prime $p$ of the form $4k+3$. Show that for any pair of integers $(a,b)$, we can get $k,l$ having these properties

Published on 08 Apr 2026 - 21:32

List Question

Maximum number of guaranteed coins to get in a "30 coins in 3 boxes" puzzle

Interesting number theoretical game

How do I show that if $\boldsymbol{a_1 a_2 a_3\cdots a_n \mid k}$ then each variable divides $\boldsymbol k $?

Using only the digits 2,3,9, how many six-digit numbers can be formed which are divisible by 6?

Algebra Proof including relative primes.

How do I show that any natural number of this expression is a natural linear combination?

Counting the number of solutions of the congruence $x^k\equiv h$ (mod q)

algebraic integers of $x^4 -10x^2 +1$

What exactly is the definition of Carmichael numbers?

Number of divisors 888,888.

Prove that if three real numbers $a, b, c$ satisfy $a^2+b^2+c^2=ab+bc+ac$, then $a=b=c$.

Alteration of digits - Smallest number

A congruence with the Euler's totient function and sum of divisors function

Möbius inversion formula?

Considering a prime $p$ of the form $4k+3$. Show that for any pair of integers $(a,b)$, we can get $k,l$ having these properties

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