The dear doctor, tell or say, please, what probability to become pregnant from mu...

[Lyudmila]

The dear doctor, tell or say, please, what probability to become pregnant from the man is more senior than 60 years.

[popenko. Century]

It depends on its or his fecundity.
Sometimes there are men 60 years with a high degree of a fecundity (ability to a fertilization) are more senior. If you do not want pregnancy it is better to be protected.