You are required to develop text based chat application ( between two users ) . establish connection between server and client. make appropriate gui. proper threading for sending and receiving messages make a server on one computer and client on the other. when client wants to chat; it will send connection request to server. after server acceptance, text based messages can be send and receive between client and server. all sent and received messages should be visible on both ends. provide decent gui; you may consult any messaging application like gtalk, yahoo.

Assignment: permutations use the permutation formula   r ! ! n n p nr   to solve each problem. be sure to show all work leading to your answer. part i: solve real-world permutation problems choose any four (4) of the following five problems to solve. for each problem a) show how the permutation formula can be used to find the answer and b) write a sentence to explain the meaning of the answer for the situation. 1. to register for online banking services at a local credit union, you need to select a four-digit personal identification number, or pin code. the digits cannot be repeated. how many ways are there to arrange four digits out of the numerals 0 through 9 to create a code?