Question

if |A|=|B|=3, find the total number of onto function defined from A to B.​

Answer 1

of functions f : A→B is given by the formula n^(m) etc. Suppose A = {1, 2, 3, 4} and B = {a, b, c}, then one can define 3^(4) =81 functions from A to B .

Answer 2

Answer:

81 is the correct answer