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Source: — Problem Solving |
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by abhinav85 » Sat May 30, 2009 7:12 am
The second ques is the problem of combinations.

It is given in the figure that there are 4 streets and 3 avenues.

so the longest route will be calculated as : 5!/3! 2! = 10 ways.

I hope u understand i am very bad at explaining.
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