Probably about as many as there are people.
not necessarily; polytheism means that many types of God, or no God can simultaneously exist.
The ontological argument does not mean that God does not exist it is just an argument based upon the concept of God itself, this topic is a controversial topic and is often led into believing the wrong way one time or another.
Yes, because many women would continue to believe in him. Yes because while man needs God to exist, God does not need man to exist.
Telekinesis does exist , there is a varied concept of the power. i for one have many uses for it , i can have the tv remote telepathically handed to me.
Muslims worship the one god - God. In Arabic the word for God is Allahone
It depends on your concept of God. In Christian doctrine, God is all-knowing and all-seeing, so "duping" would not be possible. However, that idea is applicable only if you adhere to that line of thought. Many believe, for example, that there is no God, in which case he could also not be duped, since he wouldn't exist. Really, this is a circular question.
The concept of God being omniscient, or all-knowing, raises questions about how our choices can be truly free if God already knows what we will choose. Some believe that if God knows everything, including our future choices, then our free will may be limited. Others argue that God's knowledge does not necessarily determine our choices, allowing for free will to still exist.
The question is "what is existence?" If the answer is "existence is a concept in the minds of thinking beings" then if there are no more thinking beings the concept cannot exist.
Of course, once a concept is developed it always exists, it doesn't cease to exist with time.
Because God is an abstract concept, there are no images of God. However, many artists have painted or otherwise rendered their ideas of God, and these can be found in many online galleries.
If a father (God) doesn't exist, then no son can exist.
Yes, the concept of "0" exists in this scenario.