Millions! even when you wash them they aren't fully clean-
i think about 50 to 60 percentage of germs is left on your hand
More germs are in the hair than hands!
From dirty things, direct contact(from other people) and others.
A person has more germs in their mouth than on their hands. Saliva has enzymes that prevent germs from forming, while your hands touch things such as doorknobs all day which are infested with germs.
Germ-x kills pretty much all the germs, but washing your hands only removes them ,and they go down the sink. They don't die though.
Germs can spread from your hands to surfaces, objects, or other people when you don't wash your hands after using the bathroom. Touching your face, shaking hands, or touching shared items can then transfer those germs to others, potentially causing illness. Washing your hands properly helps prevent this spread of germs.
Billions.
by not washing hands ?
No
The life span of germs on hands can vary depending on the type of germ and the conditions present. Generally, some germs can survive on hands for a few hours up to a few days. Regular handwashing with soap and water is important to reduce the transmission of germs.
I almost think you are kidding. Everything you touch, all day, every day, puts germs on your hands.
Soap kills 79% of germs off of your hands.