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Memoryless Property
: Probability of something happen in the future is irrelevent to the past
Typically, exponential distribution & geometric distribution have memoryless property.
exponential distribution can be interpreted as a continuous case of the geometric distribution, so both have the property.


Conditional Probability

P( A happens given the fact that B happens)= P( Both A and B happen)/ P( B happens)
PDF and CDF of the exponential distribution

Memoryless Property of Exponential Distribution

PDF and CDF of geometric distribution

Memoryless Property of Geometric Distribution

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