@Avik da: same problem. Jst i change the problem a bit. The main problem was upto i. That means upto:
\[\overline{abcdefghi} \equiv 0(mod 9)\]
And none of {a,b,c....i} are 0.
The problem is from The Art and craft of problem solving.
\[clubsuit\]
Search found 238 matches
- Sun Dec 12, 2010 3:43 pm
- Forum: Higher Secondary Level
- Topic: An interesting problem
- Replies: 7
- Views: 5540
- Sat Dec 11, 2010 10:27 pm
- Forum: Higher Secondary Level
- Topic: An interesting problem
- Replies: 7
- Views: 5540
Re: An interesting problem
@Moon vaia: Sorry, now the problem is correct fully!!
\[\clubsuit\]
\[\clubsuit\]
- Sat Dec 11, 2010 8:43 pm
- Forum: Site Support
- Topic: Difference?
- Replies: 2
- Views: 3396
Difference?
I cant get the deffrence between . Any 1 help me plz?
Code: Select all
$$ and \[\]
- Sat Dec 11, 2010 6:32 pm
- Forum: Higher Secondary Level
- Topic: An interesting problem
- Replies: 7
- Views: 5540
An interesting problem
Solve this: \[\begin{align*}a & \equiv 0(mod 1) \\ 10a+b & \equiv 0(mod 2) \\ 100a+10b+c & \equiv 0(mod 3) \\ 1000a+100b+10c+d & \equiv 0(mod 4) \\ 10000a+1000b+100c+10d+e & \equiv 0(mod 5) \end{align*}\] it's continuas up to j. That means: \[abcdefghij \equiv 0(mod10)\] the all {a,b,c,d....j} are d...
- Sat Dec 11, 2010 6:16 pm
- Forum: Secondary Level
- Topic: Number Theory(congruance)
- Replies: 10
- Views: 8496
Re: Number Theory(congruance)
ThanQ Moon vaia /clubsuit
- Fri Dec 10, 2010 10:11 pm
- Forum: Secondary Level
- Topic: Number Theory(congruance)
- Replies: 10
- Views: 8496
Re: Number Theory(congruance)
Why my code doesnt working?
- Fri Dec 10, 2010 2:53 pm
- Forum: Secondary Level
- Topic: Number Theory(congruance)
- Replies: 10
- Views: 8496
Number Theory(congruance)
If $x^3+y^3=z^3$ Show that one of the three must be a multiple of 7
- Fri Dec 10, 2010 11:48 am
- Forum: National Math Olympiad (BdMO)
- Topic: BdMO 2010 H. Sec. problem 8
- Replies: 22
- Views: 15101
Re: BdMO 2010 H. Sec. problem 8
How nice solution! I am not well know to use LaTeX or any code
so, please feel me. Dont ban me
so, please feel me. Dont ban me