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Permutations and combinations

 
Ishita Jain
(@ishitajain)
Trusted Member

The figure below shows the plan of a town. The streets are at right angles to each other. A rectangular park (P) is situated inside the town with a diagonal road running through it. There is also a prohibited region (D) in the town

 

 

Neelam rides her bicycle from her house at A to her office at B, taking the shortest path. Then the number of possible shortest paths that she can choose is

60

75

45

90

72

Neelam rides her bicycle from her house at A to her club at C, via B taking the shortest path. Then the number of possible shortest paths that she can choose is

1170

630

792

1200

936

1629278983-IMG_20210818_145325.jpg
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Topic starter Posted : 18/08/2021 2:59 pm
Rahul Singh
(@rahul)
Admin

ReplyQuote
Posted : 27/08/2021 1:09 am
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