If x is a set containing n elements:
1. how many functions are there f : x -> x?
2. how many relations are there r : x -> x?

Ques 1)

       Number of functions from X to X are:  

Ques 2)

     Number of relation from X to X are:

Relation--

A relation from a set A to set B is the set of all the ordered of the type:

(a,b) where a belongs to A and b belongs to B.

if A has m elements and B has  n elements.

Then the total number of relation from A to B are:

Function--

A function from a set A to set B is the set of all the ordered pair where each element of set A is mapped to a single element of the other set.

i.e. every element has a single image.

if A has m elements and B has  n elements.

Then the total number of functions  from A to B are:

  about 5.6 days

step-by-step explanation:

we can fill the given information into the decay equation and solve for the value of t at which half the sample remains.

the half-life is about 5.6 days.

false

step-by-step explanation:

whenever we assume a point on a plane then according to geometry it will definitely have 2 dimensions and if it assumed in space then it will have 3 dimensions.