Question

Prime of form $n^2-4$

score 2.6k · Answer 1 · 2026-04-15 17:55:14

2.6k

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Prime of form $n^2-4$

Published on 15 Apr 2026 - 17:55

score 378 · Answer 2 · 2026-04-08 16:17:17

378

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$p+1$ is divisible by $3$

Published on 08 Apr 2026 - 16:17

score 686 · Answer 3 · 2026-04-13 14:03:03

686

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sum of all even and odd positive divisors

Published on 13 Apr 2026 - 14:03

score 146 · Answer 4 · 2026-04-14 09:30:29

146

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find the maximum possible value of $n_9-n_1$

Published on 14 Apr 2026 - 9:30

score 97 · Answer 5 · 2026-04-14 22:12:22

97

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$3^n-1$ is divisible by $4 \implies n $ is even

Published on 14 Apr 2026 - 22:12

score 222 · Answer 6 · 2026-04-12 19:06:56

222

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Summation of positive odd and even integers

Published on 12 Apr 2026 - 19:06

score 154 · Answer 7 · 2026-04-16 01:02:30

154

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List all integers $x$ in $1\leq3 x \leq 100$

Published on 16 Apr 2026 - 1:02

score 123 · Answer 8 · 2026-04-12 09:27:27

123

Views

Condition of an integer divisible by $3$

Published on 12 Apr 2026 - 9:27

score 61 · Answer 9 · 2026-04-15 00:55:22

61

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Count the number of integer solutions to $(ax+b)/(cx+d) \in Z$

Published on 15 Apr 2026 - 0:55

score 61 · Answer 10 · 2026-04-16 17:04:29

61

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$N_k$ is the number of pairs $(a,b)$ of non-negative integers such that $ka+(k+1)b=n+1-k$. Find $N_1+N_2+\cdots N_{n+1}$.

Published on 16 Apr 2026 - 17:04

score 2.6k · Answer 11 · 2026-05-10 16:57:05

2.6k

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proving that the area of a 2016 sided polygon is an even integer

Published on 10 May 2026 - 16:57

score 73 · Answer 12 · 2026-04-17 07:21:39

73

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In writing integers $x_1$, $x_1+1$, $x_1+2$, $\ldots$, $x_2$ in base ten, how many characters are used?

Published on 17 Apr 2026 - 7:21

score 76 · Answer 13 · 2026-04-15 17:59:24

76

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find a set of integers where {$a_i + a_j | 1 \le i \le j \le n$} leave distinct remainders when divided by $n(n+1)/2$

Published on 15 Apr 2026 - 17:59

score 197 · Answer 14 · 2026-05-10 15:32:26

197

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Can someone walk me through this wolframalpha solution?

Published on 10 May 2026 - 15:32

score 56 · Answer 15 · 2026-04-14 06:27:45

56

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In how many ways can integers $a_1<a_2<a_3<a_4$ be chosen from the integers $1,2,3,...,26$ such that $5 \le a_i - a_{i-1} \le 7$

Published on 14 Apr 2026 - 6:27

List Question

Prime of form $n^2-4$

$p+1$ is divisible by $3$

sum of all even and odd positive divisors

find the maximum possible value of $n_9-n_1$

$3^n-1$ is divisible by $4 \implies n $ is even

Summation of positive odd and even integers

List all integers $x$ in $1\leq3 x \leq 100$

Condition of an integer divisible by $3$

Count the number of integer solutions to $(ax+b)/(cx+d) \in Z$

$N_k$ is the number of pairs $(a,b)$ of non-negative integers such that $ka+(k+1)b=n+1-k$. Find $N_1+N_2+\cdots N_{n+1}$.

proving that the area of a 2016 sided polygon is an even integer

In writing integers $x_1$, $x_1+1$, $x_1+2$, $\ldots$, $x_2$ in base ten, how many characters are used?

find a set of integers where {$a_i + a_j | 1 \le i \le j \le n$} leave distinct remainders when divided by $n(n+1)/2$

Can someone walk me through this wolframalpha solution?

In how many ways can integers $a_1<a_2<a_3<a_4$ be chosen from the integers $1,2,3,...,26$ such that $5 \le a_i - a_{i-1} \le 7$

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