Let f :R → R be defined byThen f is

If the set A contains 5 elements and the set B contains 6 elements, then the number of one-one and onto mappings from A to B is

Let A = {1, 2, 3, ...n} and B = {a, b}. Then the number of surjections from A into B is

Let f :R → R be defined by f (x) = 3x² – 5 and g : R → R by. Then g o f is

Which of the following functions from Z into Z are bijections?