Suppose the set of natural numbers is constructed by the constant 0 and the successor function s. Provide a definition of < and < over the natural numbers.

suppose m>0 is an integer. How many one-to-one functions are from a set of m elements to a set of m-1 elements?

what is the maximum number of functions one can make from a set of n elements to a set of m elements

The function Double replaces each element of a list of integers with twice that element. For example, when this function receives [2,0,-3] as input, the output will be [4,0,-6]. Incomplete code for Double is given below. def Double (A): for i in range(0, len (A)): #FIX ME# return A What should the line of code which contains the expression #FIX ME# be replaced with in order to complete the code? O A. A[i]=2*i O B. i=2*A[i] O C. i=2*i O D. A[i]=2*A[i]