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i still dont understand how to calculate the probability.

_DxD_

whats the probability of that if you try placing a dom at 'x', when pl=0.1, pr=0.4 ?? and how..

id really appreciate your reply..


i feel so depressed when i cant get through the meaning of the problem..

outer while lv t & inner t

I think you just made a mistake//

variable t is simply duplicated.