Not sure where they get this stuff, #38 is pretty far off...

There are 300,000,000 Americans.

Realistic age range for election 35-75 = 40 year window of opportunity.

40 years / One election every 4 years = 10 opportunities.

At each opportunity, your odds are one in 300,000,000.

300,000,000 / ten opportunities = One in 30,000,000.