Mobile Ad-hoc Networks (MANETs) are self-organized wireless networks without any central administration like Base Station (BS) or Access Point (AP). Due to the dynamic and open operational environment of these networks, malicious user gains the opportunity to initiate different types of attacks. Black Hole (BH) is a packet dropping attack in which malicious node deceives the source by advertising a fake shortest path to the destination and drops most of the packets. From the previous two decades a lot of research has been conducted by researchers to detect and prevent black hole attack in MANETs. Redundant route replies and comparison of the destination sequence number with a threshold value are two effective methods for detection and prevention these attacks. Both solutions are not effective autonomously so in this proposed research both techniques are combined to strengthen the black hole attack detection and prevention process.