what are the odds of?

Can anyone tell me what the odds are for a golfer with about a 20 handicap to get a hole-in-one if he golfs about 3 times per week within his life span of say about 70 years? Thanx !!!

Assumptions-- 4 par threes per course- 50 years of golf--- thats around 30000 par threes played--- I have read that that level golfer will get a hole in one around 1 in 50000 par threes--- The odds of not getting one is .99998 to the 30000 power, or around 54%, so the odds of getting one are around 46%. I have MINE!

Thank you very much. And, by the way, I am still looking for mine. Maybe someday. I appreciate you answering this. Have a great day.