# math

posted by .

Consider a 25×25 grid of city streets. Let S be the points of intersection of the streets, and let P be the set of paths from the bottom left corner to the top right corner of which consist of only walking to the right and up. A point s is chosen uniformly at random from S and then a path p is chosen uniformly at random from P. Over all (s,p) pairs, the probability that the point s is contained in the path p can be expressed as a/b where a and b are coprime positive integers. What is the value of a+b?

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Give me a link to this problem?

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it is of brilliant named site

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GIVE A LINK TO THE PROBLEM?

AND SHOULD NOT YOU SOLVE IT ON YOUR OWN?

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to ok. if you want to answer this on the site brilliant, you can by making an account but unfortunately, in every account, they have different sets of question basing on the level what you are in. this is such a very easy question.

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but I found that you can share links once you solve the problem.

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I think 49/625

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Arnav thuje koi answer nahi bataye ga mat try kar