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8 Questions

views newest activity votes
 
6
votes
3
answers
139
views

Induction Proof and divisibility by $2^n$

induction
may 2 '12 at 17:04 Community♦ 1
1
3
votes
3
answers
281
views

Proof of a Binomial Identity using a combinatorial argument

combinatorics binomial-coefficients
may 7 '12 at 19:17 Arturo Magidin 158k
 
2
votes
2
answers
101
views

Why is $x^7 = x$ true for every $x$ in $x ∈ Z/14Z$?

modular-arithmetic
nov 29 at 16:07 JavaMan 8,270
 
2
votes
2
answers
56
views

Modular Arithmetic Equations

modular-arithmetic inverse
nov 29 at 15:24 Jyrki Lahtonen 30.7k
 
1
vote
1
answer
60
views

How many numbers exists that are smaller than $p$ and prime with $p$?

prime-numbers
nov 15 at 16:04 mousomer 159
 
1
vote
2
answers
126
views

Fastest way to compute [1234567890]_200 with pen and paper

modular-arithmetic
nov 14 at 17:43 Community♦ 1
 
1
vote
1
answer
626
views

Inductive Proof of a countable set Cartesian product [duplicate]

elementary-set-theory induction
may 2 '12 at 22:26 Asaf Karagila 90.8k
 
0
votes
3
answers
81
views

How to compute large modulos with pen and paper?

modular-arithmetic
nov 15 at 0:58 Alex Martinez 86
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