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");
Kelly (given name) Kelly (given name) Kelly is an English-language unisex given name, derived from the Irish surname Kelly. As such, Kelly is historically a male-only name but has predominantly been used as a feminine given name since the 1960s, though with a significant minority usage as a masculine name, especially within Celtic families. During the peak of the name's popularity in the United States during the 1960s to 1970s, feminine usage was about four to five times as frequent as masculine usage. The surname Kelly has multiple origins. There is a Clan Kelly in Scotland, possibly derived from a toponym Kelloe. The