In mathematics, a square number or perfect square is an integer that is the square of an integer; in other words, it is the product of some integer with itself. For example, 9 is a square number, since it can be written as 3âÃâ3.
Yes are an English rock band formed in London in 1968 by singer Jon Anderson and bassist Chris Squire. The band have undergone numerous formations throughout its history; nineteen musicians have been full-time members. Since June 2015, it has consisted of guitarist Steve Howe, drummer Alan White, keyboardist Geoff Downes, singer Jon Davison, and bassist Billy Sherwood. Yes adopted several changes in musical style, from rearranged covers to progressive and art rock in the 1970s, before moving towards pop in the 1980s.
Over the next few years, the members of the band changed, and by 1960, the band was called The Beatles. They did not have their first hit until 1962. In February 1963 their song, Please Please Me, reached the number 1 position on the British charts. This was the first of a record 15 British number 1 singles.