What are the chances of a 65 year old man impragnating a 46 year old woman?

The chances of a 65-year-old man impregnating a 46-year-old woman exist but are relatively low compared to younger couples. Male fertility can decline with age due to reduced sperm quality and quantity, but it doesn't cease entirely. Conversely, a 46-year-old woman is approaching menopause, which significantly decreases her chances of conception. Overall, while possible, the likelihood of pregnancy in this scenario is reduced.