Hint: For any k, discover two inputs on which gk’s output would be the same. Then you can certainly conclude which the similar can not maintain for A very random function except with pretty tiny probability and hence the distinguisher can convey to apart gk from the random perform by https://thesocialvibes.com/story12872041/5-easy-facts-about-assignment%E4%BB%A3%E5%86%99-described