16 (number) 0 to 15 in each column. Sixteen is an even number and a square number. Sixteen is the fourth power of two. Sixteen is the only integer that equals "m" and "n", for some unequal integers "m" and "n" ("m" = 4, "n" = 2, or vice versa). It has this property because 2 = 2 × 2. It is also equal to 2 (see tetration). 16 is the base of the hexadecimal number system, which is used extensively in computer science. In Spanish and Portuguese, 16 is the first compound number (Spanish: "dieciséis", European Portuguese: "dezasseis", Brazilian Portuguese: "dezesseis");
Norma (given name) "Norseman". The name has fluctuated in popularity over the past 100 years. It is still a very common name in the United States, but the name was most often given to babies in the 1930s, and is now seldom given. [[Category:Feminine given names]] Norma (given name) Norma is a female name. A single instance of the name "Norma" is recorded 1203, where it perhaps derives from the Latin word "norma", meaning "precept". The name's general usage seems to be subsequent to the 1831 debut of Vincenzo Bellini's opera "Norma" whose librettist Felice Romani borrowed the name (and the plot) from