Depends on your definition of "modernized". If by modernized you mean technologically developed, then many are.
There are 56 Muslim countries in the world.
The countries of the Balkans (Greece, Serbia, Albania, Bulgaria, Romania, etc.), Turkey, and Israel are the former Ottoman Empire countries that have modernized most closely to the Western model.
They are 50 Muslim Majority countries.
50 Muslim majority countries
Actually, most countries are non-muslim, meaning either that they don't have a muslim majority, or that they don't have a muslim government.
True
True
There are 46 independent Muslim countries in the world
They are 50 countries with Muslim majority. Refer to question below.
Eastern European countries became communist, which was a political ideology modernized by the USSR.
Almost all countries of the world are having Muslim residents
The three main Muslim countries are Saudi Arabia, Indonesia, and Egypt. There are around 50 Muslim countries.