Anxiety Disorder Statistics. Anxiety Disorders affect 18.1 percent of adults in the United States (approximately 40 million adults between the ages of 18 to 54).
Perfect square. Perfect square is an element of algebraic structure which is equal to the square of another element. Square number, a perfect square integer.
BBFCinsight publication date 11/10/2012. Note: The following text may contain spoilers. PITCH PERFECT is a comedy drama about bitter rivalries in the world of competitive American college 'a capella' singing. It is rated 12 for moderate language and frequent moderate sex references.