10 Jewish men don't need to be single to have a minyan.
That's hard to say, but if you want a Jewish man, your Jewish community should have information on Jewish Singles.
In Judaism, community prayer requires the participation of a minimum of 10 men, regardless of the type of service. This is to make sure that HaShem hears their prayers. The reason the requirement is 10 men and not 10 women or men and women, is because Jewish belief states that the prayers of women are easily heard by HaShem.
Amongst Orthodox and most Conservative groups, a minyan is made up of 10 Jewish men. Amongst most other groups, a minyan can be made up 10 Jewish men and/or women.
No, only Jewish men are Jews. Also, not all Jews are men, regardless of how disproportionately Jewish men might be photographed relative to Jewish women.
There is no special belt for Jewish men. But some Jewish men wear "tseetsteet katan", which is an undershirt that has fringes at the bottom.
One can contact a Jewish single person on the Jewish Mingle website. One can also contact a Jewish single person on the sites like Match, Perfect Match and many more.
No, only about 3.5% - 8% of Jewish men are gay.
It is not permitted by Jewish law; and in Orthodox Jewish weddings the seating is separate for men and women.
Jewish men make money the same way all other people on the planet make money. There is nothing unique about the occupations of Jewish men.
Orthodox Jewish men sometimes do wear long robes.
Minyan
The same things as non-Jewish men. Though, you probably won't find them in a sausage factory.