Primary Divisonal 2012/9

Problem for Primary Group from Divisional Mathematical Olympiad will be solved here.
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Phlembac Adib Hasan
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Primary Divisonal 2012/9

Unread post by Phlembac Adib Hasan » Thu Dec 11, 2014 1:38 pm

There are six possible paths from Dhaka to Khulna. Also, there are four paths from Dhaka to Rajshahi and five (direct) paths from Rajshahi to Khulna. In how many possible ways can you go from Dhaka to Khulna directly or via Rajshahi?
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tanmoy
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Re: Primary Divisonal 2012/9

Unread post by tanmoy » Thu Dec 11, 2014 2:39 pm

I think there is a problem in the last line.It may be "In how many possible ways can you go from Dhaka to Khulna directly or via Rajshahi?
"Questions we can't answer are far better than answers we can't question"

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Phlembac Adib Hasan
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Re: Primary Divisonal 2012/9

Unread post by Phlembac Adib Hasan » Fri Dec 12, 2014 9:47 am

Yeah, I have edited it now.
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tanmoy
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Re: Primary Divisonal 2012/9

Unread post by tanmoy » Sun Dec 14, 2014 2:34 pm

I can go Khulna from Dhaka directly in $6$ ways.And I can go to Khulna from Dhaka via Rajshahi in $4\times5=20$ ways.So,total $26$ ways.
"Questions we can't answer are far better than answers we can't question"

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