Discrete Math: Let A be a set and P(A) be the power set of A. True or false with explanation a. There is an injection from A to P(A). b. There is a surjection from A to P(A). Solution Cardinality of power set P(A) is more than set A a. Injection from A to P(A) is true as an element P(A) is connected with atmost one element of A. b. Surjection from A to P(A) is false at there is elements in P(A) which are not connected with A..