Geometric distribution memoryless property

Geometric distribution memoryless property

[emiliacardenas]

Thank you for clearly explaining the memoryless function for the geometric distribution. I really appreciate the real life example you gave at the end, it helped me grasp better the concept.

[elmo]

The slides used by our prof. at BITS Pilani have an identical formal. What a coincidence.

[rileyheiman]

Since geometric is a special case for the Negative Binomial (w/ r=1)... does this imply Negative Binomial can also preserve the memoryless property?

[hungwaikay]

Is the slide calc swapped?

P(X ge x+y) / P(X ge x)
= ((1-p)^x) / ((1-p)^(x+y))
= 1 / (1-p)^y
= P(X ge y)

???