Whether a quadrilateral has ten elements. Is it true or false? Justify.

State whether the following statement is true or false? Justify your answer. There are infinitely many integers between any two integers.

State whether the following statements are true or false. Justify . If '*' is a commutative binary operation on N, then a*(b*c)=(c*b) *a

State whether the following statements are true or false. Justify. If * is a commutative binary operation on N, then a*(b*c) = (c*b)*a

State whether the following statements are true or false . Justify . For an arbitrary binary operation ** on a set N, a"*"a = a AA a inN .

State whether the following statements are true or false, Justify. If ** is a commutative binary opertion on N, then a ** (b **c) = (c**b) **a

State whether the following statements are true or false . Justify . If ** is commutative binary operation on N, then a"*" (b"*" c)=(c"*"b)"*"a .

Write whether the following statements are true or false. Justify your answers. Every quadratic equation has at least two roots.