Question: A square matrix that is not invertible is called singular or degenerate. A square matrix is singular if and only if its determinant is 0. Singular matrices are rare in the sense that a square matrix randomly selected from a continuous uniform distribution on its entries will almost never be singular. does a square matrix always have an inverse

Answer: no

Question: The celebration of Saint Andrew as a national festival is thought to originate from the reign of Malcolm III (1034--1093). It was thought that ritual slaughter of animals associated with Samhain was moved to this date, so as to assure enough animals were kept alive for winter. But it is only in more recent times that 30 November has been given national holiday status. is st andrews day a holiday in scotland

Answer: yes

Question: A black panther is the melanistic color variant of any big cat species. Black panthers in Asia and Africa are leopards (Panthera pardus), and those in the Americas are black jaguars (Panthera onca). are black panthers and jaguars the same animal

Answer:
yes