BdMO National 2012: Primary 4

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Zzzz
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BdMO National 2012: Primary 4

Unread post by Zzzz » Sun Feb 12, 2012 1:50 pm

Problem 4:
Write a number in a paper and hold the paper upside down. If what you get is exactly same as the number before rotation then that number is called beautiful. Example: $986$ is a beautiful number. Find out the largest $5$ digit beautiful number.
Every logical solution to a problem has its own beauty.
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nafistiham
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Re: BdMO National 2012: Primary 4

Unread post by nafistiham » Fri Feb 17, 2012 2:45 pm

\[99866\]
\[\sum_{k=0}^{n-1}e^{\frac{2 \pi i k}{n}}=0\]
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jkisor
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Re: BdMO National 2012: Primary 4

Unread post by jkisor » Sun Jul 15, 2012 12:05 pm

May be: 99866 :idea: :P

famim2011
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Re: BdMO National 2012: Primary 4

Unread post by famim2011 » Wed Feb 06, 2013 10:31 pm

Vhaia,eta 98886 hobe naki ?ami try korsi amar kache thik lagtase.

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sowmitra
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Re: BdMO National 2012: Primary 4

Unread post by sowmitra » Wed Feb 06, 2013 11:20 pm

@famim2011: $98886$ is also a beautiful, but, it's not the largest. $99866$ is the largest.
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famim2011
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Re: BdMO National 2012: Primary 4

Unread post by famim2011 » Thu Feb 07, 2013 7:25 am

Thanks,soumitra.Ami eta somadhan korsi.ami shudu jante cheye chilam je 98886 beautiful naki.

Md. Shahzaman Parvej
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Re: BdMO National 2012: Primary 4

Unread post by Md. Shahzaman Parvej » Wed May 22, 2013 5:24 pm

thanks to all, yes it is......................99866

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atiab jobayer
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Re: BdMO National 2012: Primary 4

Unread post by atiab jobayer » Thu Jan 30, 2014 11:48 pm

sowmitra wrote:@famim2011: $98886$ is also a beautiful, but, it's not the largest. $99866$ is the largest.
Yes,you are right
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prantick
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Re: BdMO National 2012: Primary 4

Unread post by prantick » Sun Jan 11, 2015 11:51 am

the number is 99866

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