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Re: Yet divisibility...

Someone pleasee. :(
by Katy729
Sat Oct 14, 2017 10:48 pm
 
Forum: Number Theory
Topic: Yet divisibility...
Replies: 2
Views: 259

Re: IMO $2017$ P$1$

Beautifull solution ahmedittihad!! :)
by Katy729
Mon Oct 02, 2017 3:00 pm
 
Forum: International Mathematical Olympiad (IMO)
Topic: IMO $2017$ P$1$
Replies: 4
Views: 382

Re: IMO $2017$ P$1$

Please someone post a solution... :( :(
by Katy729
Fri Sep 15, 2017 3:11 am
 
Forum: International Mathematical Olympiad (IMO)
Topic: IMO $2017$ P$1$
Replies: 4
Views: 382

Re: Yet divisibility...

Please a solution... :(
by Katy729
Wed Sep 06, 2017 6:04 pm
 
Forum: Number Theory
Topic: Yet divisibility...
Replies: 2
Views: 259

Re: a+b+c>=1/a+1/b+1/c

Someone? :(
by Katy729
Wed Sep 06, 2017 6:02 pm
 
Forum: Algebra
Topic: a+b+c>=1/a+1/b+1/c
Replies: 1
Views: 337

Re: Sequence and divisibility

Thanks tanmoy. :)
by Katy729
Wed Sep 06, 2017 5:52 pm
 
Forum: Algebra
Topic: Sequence and divisibility
Replies: 2
Views: 236

Sequence and divisibility

Let $ n$ be a positive integer and let $ a_1,a_2,a_3,\ldots,a_k$ $ ( k\ge 2)$ be distinct integers in the set $ { 1,2,\ldots,n}$ such that $ n$ divides $ a_i(a_{i + 1} - 1)$ for $ i = 1,2,\ldots,k - 1$. Prove that $ n$ does not divide $ a_k(a_1 - 1).$
by Katy729
Thu Aug 24, 2017 10:27 pm
 
Forum: Algebra
Topic: Sequence and divisibility
Replies: 2
Views: 236

Re: Double inequality

Yes sMMamum, it was obviously an error.
Very good and clear solution.
Thanks!! :)
by Katy729
Thu Aug 24, 2017 10:22 pm
 
Forum: Algebra
Topic: Double inequality
Replies: 3
Views: 204

Re: Double inequality

Someone? :(
by Katy729
Sat Aug 19, 2017 11:10 pm
 
Forum: Algebra
Topic: Double inequality
Replies: 3
Views: 204

Re: Equality and square

Thanks Antonu! :)
by Katy729
Sat Aug 19, 2017 11:09 pm
 
Forum: Number Theory
Topic: Equality and square
Replies: 2
Views: 218
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