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forum.virtualchallengemeets.com • View topic - Number of paths from A to B

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Number of paths from A to B

What could be so hard. It's a multiple-choice test for Pete's sake.
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Number of paths from A to B

Postby texaslonghorn » Mon Feb 25, 2013 6:59 pm

I am looking for help on how one tackles this other than using the brute force method of manually counting paths?

Image

Thanks,
Phil
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Re: Number of paths from A to B

Postby qwerty123 » Mon Feb 25, 2013 7:50 pm

Um.. might I ask what kind of test did you see this?

If I had a very limited time, I would just count all of the possibilities b/c the #s are pretty small.
and also I don't think somebody would just come up w/ an algorithm for something like that quickly.
[unparseable or potentially dangerous latex formula]
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Re: Number of paths from A to B

Postby texaslonghorn » Mon Feb 25, 2013 8:04 pm

This type of question commonly appears (one per quiz) in the TMSCA Tournaments on General Math for 4th and 5th grades.

Phil
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Re: Number of paths from A to B

Postby nsguy1350 » Mon Feb 25, 2013 10:31 pm

Is the answer 13? I don't see any other approach besides being organized when counting the paths.
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Re: Number of paths from A to B

Postby texaslonghorn » Mon Feb 25, 2013 11:29 pm

The answer key says 15 paths.
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Re: Number of paths from A to B

Postby 101dalmatians » Tue Feb 26, 2013 6:59 pm

OOOOMMMMGGGG

nsguy1350 the GREAT
2nd in state NS
8th in state MA
8th in state CA
2nd to TOP BIO Region 2012

BUT
when it comes to simple elementary school math, nsguy... did u see what happened?
OOMMGG

@Phil
Do they really ask these qs that NSGUY misses on the math test for elementary school?
I guess this signature really doesn't matter now that I know that the forum is going down soon...
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