For a positive integer N, let An be the set of integers 1 through N. A permutation of the set Ay is the ordered sequence (a1,a2,...,an) such that each integer appears exactly once. For instance, (1,2,4,3) and (2,4,3,1) are two permutations of the set A4. A permutation (a1, a2, ...,an) can be represented as an array P of length N where P[i] = a;. Given an integer N and array P of integers of length N, design an algorithm which checks whether P represents any permutation of An.

Alex’s family members live in different parts of the world. they would like to discuss the wedding plans of one of their distant relatives. however, alex wants all the family members to talk to each other simultaneously so that they can make decisions quickly. which mode of internet communication should they use? a. blog b. email c. wiki d. message board e. instant messaging

Pl i need the answer now ! which one of the following is considered a peripheral? a software b mouse c usb connector d motherboard

What is wi-fi infrastructure? a metropolitan area network that uses radio signals to transmit and receive data a communications technology aimed at providing high-speed wireless data over metropolitan area networks a means by which portable devices can connect wirelessly to a local area network, using access points that send and receive data via radio waves includes the inner workings of a wi-fi service or utility, including the signal transmitters, towers, or poles and additional equipment required to send out a wi-fi signal