nobody knows and honestly I COULD CARE LESS ! :p
None. People are either Baha'i or not.
It was Orthodox Christianity.
Religions: Christianity (mostly Eastern Orthodox, also Protestant); also Islam. However, about one-third of the people are nonreligious or atheist.
The Orthodox Church of Greece (Eastern Orthodox Church).
Exact statistics unknown. Approx 10 million
It's mostly Orthodox Jews.
We Serbs are Orthodox Christians. I am a Serbian so i should know and I do. Serbia has many major religious groups in it, Islam, Orthodox Christians, Roman Catholic are all very large.
On the contrary, it's the only branch of Judaism whose numbers are increasing. Besides, Orthodox Jews (or any Jews) are not the type of people to brandish deadly weapons. Orthodox Judaism has been around for many centuries and will continue to be.
A ‘Greek Orthodox’ Christian is a Christian who comes under the Orthodox Church of Greece. In the rest of the world, he or she would be known as an Orthodox Christian. The name "greek orthodox" should not be used to describe Orthodox Christians in other countries outside of Greece. There is no nationality in the Orthodox Church. It is open to people of all backgrounds, races and cultures. Orthodox Christians in Japan are Japanese Orthodox, Orthodox Christians in Russia are Russian Orthodox, Orthodox Christians in America are American Orthodox, etc.
This is a very hard question - my Priest told me that we shouldn't think in numbers. However, most estimates are between 250 million to 350 million. Other estimates are much higher including people who are Orthodox on paper but are not actively involved in the Church. Also, this number is steadily increasing in many former Communist countries where people are returning back to the Church. There are also many non-Orthodox parishes accepting the Orthodox faith throughout lands that are not traditionally Orthodox. There are also many millions of Non-Chaledonian Oriental Orthodox Christians, with the largest number in Ethiopia.
They are saving people's souls.
as of 2013 All Orthodox churches teach that gay people are sinners, and most will not allow gay people as members unless they are celibate.