Everything is ok except this, I understand that it was a typing mistakesourav das wrote: So by symmetry there are $2^{17} / 2 = 2^{16}$ subsets like this.
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- Tue Aug 02, 2011 8:50 am
- Forum: Combinatorics
- Topic: Count subsets of finite positive integers constrained by sum
- Replies: 3
- Views: 3440
Re: Count subsets of finite positive integers constrained by
- Tue Jun 28, 2011 10:33 pm
- Forum: Social Lounge
- Topic: I might already be too late, but i don't want to give up
- Replies: 7
- Views: 6405
Re: I might already be too late, but i don't want to give up
Also, are there going to be any bootcamps in the recent future, within dhaka? I would very much like to attend them. I run a math club with my friends in Dhaka: Ramanujan Gonit Songho. You are welcome to our weekly sessions. Join the group in facebook for regular notification. You really need not l...
- Fri Jun 17, 2011 7:22 pm
- Forum: Higher Secondary Level
- Topic: Plz someone help me to solve this problem.
- Replies: 10
- Views: 7977
Re: Plz someone help me to solve this problem.
the question was to find positive integers,not prime integers. I know, I did not give you the complete solution. Just gave some hints. I meant to solve it exactly how Nadim solved. You need to know the theorem that, If n is any number such that n=p^{a}p'^{b}........ Where p,p'....... Then the numbe...
- Sat Jun 11, 2011 11:45 pm
- Forum: Number Theory
- Topic: factorials to perfect squares
- Replies: 20
- Views: 11676
Re: factorials to perfect squares
Tahmid, check if this google search result help.
Google is our friend!
Google is our friend!
- Sat Jun 11, 2011 5:13 pm
- Forum: Higher Secondary Level
- Topic: Plz someone help me to solve this problem.
- Replies: 10
- Views: 7977
Re: Plz someone help me to solve this problem.
I am not giving the complete solution. Just telling one possible approach. Do the solution yourself or ask if you need more information. First note that 10! has only the prime factors 2, 3, 5 and 7. The next prime 11 cannot be in 10! because it is bigger than 10. Now you need to find out the maximum...
- Fri Jun 10, 2011 4:18 pm
- Forum: Higher Secondary Level
- Topic: PIE
- Replies: 8
- Views: 6652
Re: PIE
Why not! Machines are very good at that one. Also, they can generate the values if you teach them a formula or algorithm.photon wrote:i don' understand how that machines can remember irrational values like $e,pi $ ??????
- Thu Jun 09, 2011 9:31 am
- Forum: Number Theory
- Topic: factorials to perfect squares
- Replies: 20
- Views: 11676
Re: factorials to perfect squares
I believe it should be:Masum wrote: Theorem (ERDOS):
The product of more than two consecutive numbers is not a perfect power.
The product of more than two consecutive positive integers is not a perfect power.
You should be more careful when stating a theorem.
- Tue Jun 07, 2011 4:38 pm
- Forum: Combinatorics
- Topic: Count subsets of finite positive integers constrained by sum
- Replies: 3
- Views: 3440
Count subsets of finite positive integers constrained by sum
You are given a set S of first 18 positive integers.
How many subsets of S will have sum greater than 85?
I was watching a video lecture on Symmetry. The problem was given in the booklet provided with the lecture. Its a hint
How many subsets of S will have sum greater than 85?
I was watching a video lecture on Symmetry. The problem was given in the booklet provided with the lecture. Its a hint
- Mon Mar 07, 2011 10:16 am
- Forum: Combinatorics
- Topic: Digit-swapping game (own)
- Replies: 5
- Views: 4436
Re: Digit-swapping game (own)
I am still confused. Does RANDOM mean NO STRATEGY? I mean neither knows no winning strategy?
- Sun Mar 06, 2011 1:31 pm
- Forum: Social Lounge
- Topic: Math Club
- Replies: 15
- Views: 10715
Re: Math Club
Bijoy Da. He runs the math club at Chitagong.