$20*19=380$. Adib, take your time, ok.Phlembac Adib Hasan wrote:Solution:
Problem!!!(BOMC-2)
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You spin my head right round right round,
When you go down, when you go down down......(-$from$ "$THE$ $UGLY$ $TRUTH$" )
When you go down, when you go down down......(-$from$ "$THE$ $UGLY$ $TRUTH$" )
Re: Problem!!!(BOMC-2)
As Sourav da said, no hurry, and don't make such silly mistake in your calculations. Do not let it turn to fatal.Phlembac Adib Hasan wrote:Solution:
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Re: Problem!!!(BOMC-2)
Ooppssss edited.Now my calculation also says it is impossible for twenty numbers.
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Re: Problem!!!(BOMC-2)
Actually I'm little bit confused. Do anyone can give me a rigorous proof that it is impossible?
You spin my head right round right round,
When you go down, when you go down down......(-$from$ "$THE$ $UGLY$ $TRUTH$" )
When you go down, when you go down down......(-$from$ "$THE$ $UGLY$ $TRUTH$" )
Re: Problem!!!(BOMC-2)
I think $21$ elements is the correct number, as $\binom {21}{2}=210 \approx 3 (70-1)+1$ which gives the four $k$ property.
Please read Forum Guide and Rules before you post.
Use $L^AT_EX$, It makes our work a lot easier!
Nur Muhammad Shafiullah | Mahi
Use $L^AT_EX$, It makes our work a lot easier!
Nur Muhammad Shafiullah | Mahi