"Soon We will show them our signs in the (farthest) regions (of the earth), and in their own souls, until it becomes manifest to them that this is the Truth. Is it not enough that thy Lord doth witness all things?" (The Glorious Quran, 41:53)

"Those whose intelligence has been stolen by material desires surrender unto demigods and follow the particular rules and regulations of worship according to their own natures." [Bhagavad Gita 7:20]

If a new object or a machine, which no one in the world has ever seen or heard of before, is shown to an atheist or any person and then a question is asked, " Who is the first person who will be able to provide details of the mechanism of this unknown object? After little bit of thinking, he will reply, ‘the creator of that object.’ Some may say ‘the producer’ while others may say ‘the manufacturer.’ What ever answer the person gives, keep it in your mind, the answer will always be either the creator, the producer, the manufacturer or some what of the same meaning, i.e. the person who has made it or created it. Don’t grapple with words, whatever answer he gives, the meaning will be same, therefore accept it.

http://www.islam101.com/religions/provingGodExists.htm

Let us apply this theory of probability to the Qur’an, and assume that a person has guessed all the information that is mentioned in the Qur’an which was unknown at that time. Let us discuss the probability of all the guesses being simultaneously correct.

At the time when the Qur’an was revealed, people thought the world was flat, there are several other options for the shape of the earth. It could be triangular, it could be quadrangular, pentagonal, hexagonal, heptagonal, octagonal, spherical, etc. Lets assume there are about 30 different options for the shape of the earth. The Qur’an rightly says it is spherical, if it was a guess the chances of the guess being correct is 1/30.

The light of the moon can be its own light or a reflected light. The Qur’an rightly says it is a reflected light. If it is a guess, the chances that it will be correct is 1/2 and the probability that both the guesses i.e the earth is spherical and the light of the moon is reflected light is 1/30 x 1/2 = 1/60.

Further, the Qur’an also mentions every living thing is made of water. Every living thing can be made up of either wood, stone, copper, aluminum, steel, silver, gold, oxygen, nitrogen, hydrogen, oil, water, cement, concrete, etc. The options are say about 10,000. The Qur’an rightly says that everything is made up of water. If it is a guess, the chances that it will be correct is 1/10,000 and the probability of all the three guesses i.e. the earth is spherical, light of moon is reflected light and everything is created from water being correct is 1/30 x 1/2 x 1/10,000 = 1/60,000 which is equal to about .0017%.

The Qur’an speaks about hundreds of things that were not known to men at the time of its revelation. Only in three options the result is .0017%. I leave it upto you, to work out the probability if all the hundreds of the unknown facts were guesses, the chances of all of them being correct guesses simultaneously and there being not a single wrong guess. It is beyond human capacity to make all correct guesses without a single mistake, which itself is sufficient to prove to a logical person that the origin of the Qur’an is Divine.

..and for those of the Hindu-Buddhist persuasion (the opposite of Judeo Christian blends):

http://www.islam101.com/religions/hinduism/Mhs.htm
http://www.islam101.com/religions/hinduism/conceptOfGod.htm

Hinduism is commonly perceived as a polytheistic religion. Indeed, most Hindus would attest to this, by professing belief in multiple Gods. While some Hindus believe in the existence of three gods, some believe in thousands of gods, and some others in thirty three crore i.e. 330 million Gods. However, learned Hindus, who are well versed in their scriptures, insist that a Hindu should believe in and worship only one God.

The difference between "Islam" and the "sects" of Islam i.e. Hinduism, Judaism, Christianism, Animism, Shintoism, etc....is exactly that. They are SECTS of Islam and their sacred texts have been obscured, vanished or mistranslated and are no longer read by the oppressed majority within those sects. Those who can and do understand the meaning of such texts no longer possess power over the beliefs of the people due to a myriad of causes. The Quran on the other hand, for those that are not opposed to the Creator of the Creation, has a known lineage, is in the ARABIC tongue of the prophet who related it and the authorship can be verified using the ayat which are notably scientific, rhetorical and impossible to copy (numerically balanced). The most important aspect of that however is that the Quran is the last commentary. There are no more chances after it to comprehend the story of the world and the progenitor of its secrets, its laws, and its inevitable demise.