Answers

2016-03-22T11:07:03+05:30
To show that they are blinds
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2016-03-22T11:09:47+05:30
Since blind people are not able to see anything , so that's why they carry a white stick , so that if anything come in front of them , will be collided to the stick , so that they came to know that something is in front of them by noise created by collision of stick with any object
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