If you mean by Muslim the Islam religion follower, then he/she can be old as any other human on earth. However, if you how old is the Islam religion, then it is as old as the universe. Refer to question below.
Answer 1
I believe Muslims think the Earth and Universe were created before Allah (God) created Adam. While no specific date or age is listed, the fact that the Earth is likely around 4 or 5 billion years old makes sense and fits with the Islamic perspective of the Adam and Eve story.
Answer 2
While Muslims are not as vocal about this particular issue as Christians are (primarily because many Muslims are perfectly fine with learning evolution to tick boxes but not actually having to believe it), it is Islamic Doctrine that world is only a few thousand years old. Islam does not ascribe to the Theory of Evolution or the idea of Old Earth. In Turkey, the most liberal Muslim-majority country (aside from possibly Albania), survey respodents have majoritarily denied the validity of both the Theory of Evolution and Old Earth. Muslims in the former Soviet Union are typically more open to these Theories due to strength and culture-washing nature of the Soviet Union.
Islam is silent on this and doesn't give any specific age or time frame for the world.
The Muslim faith is known for existing as far back as the 6th century. This period existed between 126 BH and 23 BH.
It doesnt say.
Please see the related question
Of course they fast as all Muslims of the world and based on the same rules of fasting according to the Quran and Prophet Muhammad (PBUH) teachings.
respect their contracts and agreements with Muslims and not kill the Muslims
Yes, the latest available statistics show that Muslims are 23% of total world population (~ 1600 million Muslims) per PEW Forum study as of October 2009.
No the Muslims live by the quran.
There are approximately 1.8 Billion Muslims in the world. Peace.
according to wikipedia, there are about 300-400 Muslims in Uruguay.
Most Muslims of the Arab world live in Egypt.
No, Shia constitute about 15% of total Muslims in the world.
Home language of 85% of world Muslims is not Arabic.
Muslims.
Around 1600 million Muslims.
Muslims worship almost in all countries of the world; either as majority or as minority.Allover the world