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Seventy-two is the sum of four consecutive primes (13 + 17 + 19 + 23), as well as the sum of six consecutive primes (5 + 7 + 11 + 13 + 17 + 19). The product of 8 and 9, 72 is a pronic number. The sum of the eighth row of Lozanić's triangle is 72. In a plane, the exterior angles of a regular pentagon measure 72 degrees each.
72 is the atomic number of hafnium and the life duration of the ovule in 72 hours. In degrees Fahrenheit considered to be room temperature and the average number of heartbeats per minute for a resting adult. The number of languages spoken at the Tower of Babylon according to the bible, number of warriors on the Muslim side at the Battle of Badr, also the number of people martyred along with Imam Hussain at the Battle of Karbala. 72 stupas comprise Borobudur, the world’s largest Buddhist temple, in Magelang, Central Java, Indonesia.
A Persian classical santur, a hammered dulcimer, has 72 strings in 24 triple-stringed courses.
In typography, point sizes are measured in 1/72 of an inch, 72-point characters are 1 inch tall. Hence 72dpi as a basic display screen resolution. Its the ASCII code for 'H'
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