Search found 8 matches
- Mon Jan 16, 2012 3:05 pm
- Forum: Combinatorics
- Topic: Easy one...
- Replies: 8
- Views: 6054
Re: Easy one...
is it 2010?
- Fri Dec 16, 2011 12:57 pm
- Forum: Algebra
- Topic: two variable equations number of solution.
- Replies: 4
- Views: 3194
Re: two variable equations number of solution.
thank you.Got it.
- Thu Dec 15, 2011 10:53 pm
- Forum: Higher Secondary Level
- Topic: অঙ্কের সংখ্যা কত
- Replies: 5
- Views: 4624
Re: অঙ্কের সংখ্যা কত
The number has 31 digits.I got an idea to solve it easily and finished the easy part, and a friend of mine completed the hard part. But as I am visiting from a cell phone, its bad that I can't post the solution.
- Thu Dec 15, 2011 10:42 pm
- Forum: Algebra
- Topic: two variable equations number of solution.
- Replies: 4
- Views: 3194
two variable equations number of solution.
A n'th degree equation has n solutions,thats what we know.But if there were 2 variables in the equation instead of 1 variable,what would happen?How many solutions would the equation have?I am a little uncertain, can anyone answer?
- Sat Dec 10, 2011 12:49 pm
- Forum: Higher Secondary Level
- Topic: ধারার সমস্যা
- Replies: 7
- Views: 5121
Re: ধারার সমস্যা
Is the answer 1?
- Sat Dec 10, 2011 12:32 pm
- Forum: Junior Level
- Topic: 5=4 ! ! ! ! !
- Replies: 14
- Views: 31322
Re: 5=4 ! ! ! ! !
It might be 12.
- Sat Jul 16, 2011 11:42 pm
- Forum: Higher Secondary Level
- Topic: Find the last digit of 7^2007
- Replies: 10
- Views: 7221
Re: Find the last digit of 7^2007
the problem can be solved without using modular arithmetic. the last digit of 7^1 is 7, for 2 its 9, for 3 its 3, for 4 its 1 and for 5 its again 7.as we can write 2007 like that ….4*501+3……the last digit of 7^2007 will be the last digit of 7^3, no need of mod.
- Sat Jul 16, 2011 2:25 pm
- Forum: Number Theory
- Topic: a new problem
- Replies: 3
- Views: 2863
a new problem
This problem is more logic than number theory. Really funny one. bb took 2 numbers x and y which are greater than 0 n smaller than 10.he told mr. pp value of x*y and mr. ry x+y.then they started a dialogue. Pp:i dont know the numbers ry:i dont know them too. Pp:dont know them yet. ry:dont know them...