There are ten main Incarnations of Lord Vishnu (Avataar):
(1) Matsya Avataar (The Fish Incarnation),
(2) Koormaa Avataar (The Tortoise Incarnation),
(3) Varaah Avataar (The Boar Incarnation)
(4) Narsinh Avataar (The Man with Lion Head Incarnation),
(5) Vaaman Avataar (The Dwarf Incarnation, Vaaman means 52 so only
     this Avataar was only a 52 finger-width tall child),
(6) Parashuraam Avataar (The Ram with Axe Incarnation),
(7) Raam Avataar (The Raam Incarnation in Soorya Vansh)
(8) Krishn Avataar (The Krishn Incarnation in Chandra Vansh)
(9) Buddha Avataar (The Gautam Buddha Incarnation)
(10) Kalki Avataar - Yet to come, will be at the end of the Kali Yug to bring Sat Yug.

There are ten types of Vaayu (wind) in our body:  Praan, Apaan, Samaan, Udayaan, Vayaan, Naag, Karm, Krikaal, Devadatt, Dhananjaya. When Praan Vaayu goes out of the body, we die.

If the ten Indriyaan (given below in Eleven section) of human body are Shuddh (without any evil) then they are called ten Vairaagin. 

There are eleven Indriyaan in our body - five Gyaan Indriyaan, five Karm Indriyaan and one Man or Hridaya (Heart) governing all of them.

Gyaan Indriyaan gives us knowledge - eyes by seeing, ears by hearing, skin by touching, nose by smelling, and tongue by tasting.

Karm Indriyaan are for doing daily duties of our life - hands to donate something to somebody, feet to go to Bhagavaan's Darshan, anus to excrete solid wastage, procreation organs, 

Above all is Man or mind which controls all these Indriyaan. If Man wants, it can control the action of all these ten Indriyaan. That is why it is said that "If you have control on your Man, you have control on your body."

Many people keep fast on Ekaadashee (11th day of every fortnight). It reminds one to control one's eleven Indriyaan.  

There are twelve Raashi (Signs) through which the nine Grah (planets) travel. The total time period of this travel is calculated as 120 years. These Raashi are:

(1) Mesh - Aries,             (2) Vrishabh - Taurus,           (3) Mithun - Gemini,
(4) Kark - Cancer,            (5) Sinh - Leo,                     (6) Kanyaa - Virgo,
(7) Tulaa - Libra,            (8) Vrishchik - Scorpio,           (9) Dhanu - Saggitarius,
(10) Makar - Capricorn,    (11) Kumbh - Aquarius,          (12) Meen - Pisces

Every Grah (Planet) has a different time span for each Raashi. These 12 Raashi are equally distributed around the Earth - 30 degrees each.

There are twelve Maas (Months) in a year. Everybody knows that the Sun revolves around the Earth and it takes 12 months or one year to come to the same place.

The Sun also travels through these Raashi (Signs, see above). It stays in all Raashi for equal time. Since the Sun takes 12 months or one year to travel through these Raashi, the Sun stays in each Raashi for one full month.

In the same way Moon also travels through these Raashi. But it takes only a little more than 29 days in each Raashi, so it also takes one year, but a little less than the Sun Year.

In Christianity, Thirteen number is a bad number and omen. Because when Jesus had his Last Supper, they were Thirteen people on the table.

Julian calendar has Thirteen Months. Ethiopians observe this calendar. In this calendar all Twelve Months are of 30 days each, but then they have a short Thirteenth Month of 5 days. This calendar starts from September 11.

Many hotels do not have thirteen number room and thirteen number floor. 

There are fourteen Lok - seven in Aakaash (sky) and seven in Paataal (below this earth).

Names of seven Paataal Lok:   Atal, Sutal, Vital, Talaatal, Mahaatal, Rasaatal, Paataal. These Lok are imagined in human body also. And their placement is below navel, up to feet.

Names of seven Aakaash Lok:  Bhoo, Bhuvah, Swah, Mah, Jan, Tap, Satya. Their placement in the human body is from navel to head.

Bhoo Lok in navel,
Bhuvah in stomach,
Swah in heart,
Mah in throat,
Jan in mouth,
Tap in forehead,
Satya in the breath hole in the center of the forehead. 

There are twenty-seven Nakshatra (Constellations) in the sky which also make up the twelve Raashi (Signs) - 2 and 1/3 Nakshatra for each Sign.

There are thirty Days in a month. 

There are one hundred and eight beads in the Maalaa (Rosary) which Hindu use for counting their Jaap (in Jaap the same word or Mantra is repeated several times, this Maalaa is used to count those words or Mantra).

There are 54 letters in Sanskrit alphabet; and if you write them from both sides, they become 108 in number.

The Indian Subcontinent rosary or set of Mantra counting has 108 beads. 108 has been a sacred number in the Indian Subcontinent for a very long time. This number can be explained in many different ways.

The ancient Indians were excellent mathematicians and 108 may be the product of a precise mathematical operation (e.g. 1 power 1 x 2 power 2 x 3 power 3 = 108) which was thought to have special numerological significance.  (Powers of 1, 2, and 3 in math: 1 to 1st power=1; 2 to 2nd power=4 (2x2); 3 to 3rd power=27 (3x3x3). 1x4x27=108)

Sanskrit alphabet: There are 54 letters in the Sanskrit alphabet. Each has masculine and feminine, Shiv and Shakti - so 54 times 2 is 108.

Shree Yantra: On the Shree Yantra there are Marm (points) where three lines intersect, and there are 54 such intersections. Each intersections has masculine and feminine, Shiv and Shakti qualities. 54 x 2 equals 108. Thus, there are 108 points that define the Shree Yantra as well as the human body.

9 times 12: Both of these numbers have been said to have spiritual significance in many traditions. 9 times 12 is 108. Also, 1 plus 8 equals 9. That 9 times 12 equals 108.

Heart Chakra: The chakras are the intersections of energy lines, and there are said to be a total of 108 energy lines converging to form the Heart Chakra. One of them, Sushumnaa leads to the Crown Chakra, and is said to be the path to Self-realization.

Marm: Marm or Marm Sthaan (delicate places in a body) are like energy intersections called Chakras, except that have fewer energy lines converging to form them. There are said to be 108 Marm places in the subtle body.

Time: Some say that there are 108 feelings, with 36 related to the past, 36 related to the present, and 36 related to the future.

Astrology: There are 12 constellations, and 9 arc segments called Namshas or Chandra Kalaa. 9 times 12 equals 108. Chandra is the Moon, and Kalaa are the divisions within a whole.

Planets and Houses: In astrology, there are 12 houses and 9 planets. 12 times 9 equals 108.

Gopee of Krishn: In the Krishn tradition, there were said to be 108 Gopee of Krishn.

1, 0, and 8: 1 stands for God or higher Truth, 0 stands for emptiness or completeness in spiritual practice, and 8 stands for infinity or eternity.

Sun and Earth: The diameter of the Sun is 108 times more the diameter of the Earth.

Numerical scale (Numerals): The 1 of 108, and the 8 of 108, when added together equals 9, which is the number of the numerical scale, i.e. 1, 2, 3 ... 10, etc., where 0 is not a number.

Smaller divisions: When the number 108 is divided, such as in half, or in third, or in quarter, or in twelfth, so that some Maalaa can have 54, or 36, or 27, or 9 beads.

Islam: The number 108 is used in Islam to refer to God.

Jain: In Jain religion, 108 are the combined virtues of five categories of holy ones, including 12, 8, 36, 25, and 27 virtues respectively.

Sikh: The Sikh tradition has a Maalaa of 108 knots tied in a string of wool, rather than beads.

Chinese: The Chinese Buddhists and Taoists use a 108 bead Maalaa, which is called Su-chu, and has three dividing beads, so the Maalaa is divided into three parts of 36 each.

Stages of the Soul: It is believed that Aatmaa, soul, or center goes through 108 stages on the journey.

Meru: This is a larger bead, not part of the 108. It is not tied in the sequence of the other beads. It is the guiding bead, the one that marks the beginning and end of the Maalaa and when several Maalaa are done for a Mantra, this Meru is not crossed. One has to count backward for the next Maalaa.

Dance: There are 108 forms of dance in the Indian traditions.

Pythagorean: Number 9 is the limit of all numbers, all others existing and coming from the same. ie: 0 to 9 is all one needs to make up an infinite amount of numbers.

There are 108 Upanishads, listed below, as per the list contained in the Muktikopanishad. They are arranged them in four categories according to the particular Ved to which each of them belong.

Rig Ved (10): Aitareya , Atmabodha, Kaushitaki, Mudgala, Nirvana, Nadabindu, Akshamaya, Tripura, Bahvruka, Saubhagyalakshmi.

Yajur Ved (50): Kath, Taittiriya , Eeshaa Vaasya , Brihadaaranyak, Akshi, Ekaakshar, Garbh, Praagnihotra, Shwetaashwatar, Sariraka, Shuk Rahasya, Skand, Sarvasara, Adhyatma, Niralamba, Paingalaa, Maantrik, Muktik, Subal, Avadhoot, Kath Rudra, Brahm, Jaabaala, Turiyaateeta, Param Hans, Bhikshuk, Yaagyavalkya, Satyaayani, Amritanad, Amrit-bindu, Kshurikaa, Tejo-bindu, Dhyaan-bindu, Brahm-vidyaa, Yog-kundalinee, Yog-tattwa, Yog-shikhaa, Varaah, Adwaitaraka, Trisikhi-braahman, Mandal-braahman, Hans, Kalisantaraaa, Naaraayan, Tarasara, Kaalaagni-Rudra, Dakshinaamoorti, Pancabrahma, Rudra-hridaya, Saraswatee Rahasya.

Saam Ved (16): Ken, Chhaandogya, Mahat, Maitreyani, Vajra-shuchi, Saavitree, Aruneya, Kundeek, Maitreyee, Samnyasa, Jaabaal-darshan, Yogacudaman, Avyakt, Vaasudevaaya, Jaabaali, Rudraaksh-Jaabaal.

Atharv Ved (32): Prashn , Mandookya, Mundak, Aatm, Soorya, Naarad-Parivraajak, Parabrahm, Paramahans-Parivraajak, Pashupat-Brahma, Mahaavaakya, Shaandilya, Krishn, Garud, Gopaal-tapanee, Tripad-vibhuti-mahaanaaraayan, Dattaatreya, Kaivalya, Nrasinh-tapanee, Raam-tapani, Raam Rahasya, Hayagreev, Atharv-shikhaa, Atharv-shiraa, Ganapati, Brhajjabala, Bhasm-Jaabaal, Sharabh, Annapoornaa, Tripur-tapanee, Devee, Bhaavanaa, Seetaa.