Dhaka Secondary 2010/12

Problem for Secondary Group from Divisional Mathematical Olympiad will be solved here.
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Please don't post problems (by starting a topic) in the "Secondary: Solved" forum. This forum is only for showcasing the problems for the convenience of the users. You can post the problems in the main Divisional Math Olympiad forum. Later we shall move that topic with proper formatting, and post in the resource section.
BdMO
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Dhaka Secondary 2010/12

Unread post by BdMO » Fri Jan 21, 2011 7:07 pm

From $1$ to $300$, how many integers are multiples of $2$ or $3$ but not of $8$?
similar: viewtopic.php?f=42&t=378

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leonardo shawon
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Re: Dhaka Secondary 2010/12

Unread post by leonardo shawon » Tue Jan 25, 2011 12:54 pm

answer: 213
Ibtehaz Shawon
BRAC University.

long way to go .....

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harrypham
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Re: Dhaka Secondary 2010/12

Unread post by harrypham » Sat Aug 10, 2013 7:26 am

leonardo shawon wrote:answer: 213
Could you please show me your solution ? Thank you.

mission264
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Re: Dhaka Secondary 2010/12

Unread post by mission264 » Tue Jan 14, 2014 5:12 pm

shouldn't this be 163?
$\lfloor \frac{300}{2} \rfloor + \lfloor \frac{300}{3} \rfloor - \lfloor \frac{300}{6} \rfloor - \lfloor \frac{300}{8} \rfloor=163$

mission264
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Re: Dhaka Secondary 2010/12

Unread post by mission264 » Tue Jan 14, 2014 5:14 pm

and you put wrong link as 'similar'. i think that should be this viewtopic.php?f=42&t=378

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*Mahi*
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Re: Dhaka Secondary 2010/12

Unread post by *Mahi* » Tue Jan 14, 2014 7:25 pm

mission264 wrote:and you put wrong link as 'similar'. i think that should be this viewtopic.php?f=42&t=378
Fixed it, thanks for pointing out!
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