Definition of Greatest Integer Function. The greatest integer function of a real number x is represented by f(x) = [x] or |_x_|. For all real numbers x, the greatest integer function returns the largest integer less than or equal to x.
Daniel James Johnson, aka Danger Dolan, is an Australian YouTuber who specializes in trivia countdown videos narrated by animated characters.
Grayson Dolan. Grayson Dolan was born, along with his twin brother, Ethan Grant Dolan, on December 16th, 1999. The twins enjoy success on YouTube with over 2.6 million subscribers and 202+ million views on TheDolanTwins. They strive to post a new video every Tuesday. Both twins are also on Instagram and Twitter.