Routing in ad hoc networks is a major criteria, which always plays a key role. A study of routing in ad hoc networks should not focus only on finding a shortest path to the destination. So, we have done a study of routing in ad hoc networks which takes into account the important factors which revolves around routing, like routing the packets through a shortest path, identifying the neighbors by broadcasting messages, using different parameters to reduce the overhead because of flooding, route discovery to find an appropriate route to the destination, using location-based information for route discovery, retrieving the information about destination using Hint-Based Probabilistic protocol and a protocol WARP (Wormhole-Avoidance Routing Protocol) to detect and quarantine the wormhole nodes, when routing the packets to the destination.