Number of Bijective Functions

Number of bijective function from a set of 10 elements to itself is

Number of bijective function from a set of 10 elements to itself is

The number of bijective function from a set A to itself when A contains n elements is-

If f(1)+f(2)+f(3)=3 and A={0,1,2,3,. . . 9} , then find the number of bijective function f:A to A which satisfy?

The number of non bijective functions form set A consisting 5 elements to an other set consisting 5 elements is

Show that the inverse of a bijective function is unique.

Define bijective function.

If f : A to B and g: B to C are two bijective functions then prove that gof : A to C is also a bijection.

A is a set having 6 distinct elements. The number of distinct functions from A to A which are not bijection is

A is a set having 6 distinct elements . The number of distinct functions from A to A which are not bijections is