University of KashanIranian Journal of Mathematical Chemistry2228-64894120130301Wiener numbers of random pentagonal chains5976528210.22052/ijmc.2013.5282ENH. YONG WANGUniversity of South China, P. R. ChinaJ. QINUniversity of South China, P. R. ChinaI. GUTMANUniversity of Kragujevac, SerbiaJournal Article20140504The Wiener index is the sum of distances between all pairs of vertices in a connected graph. In this paper, explicit expressions for the expected value of the Wiener index of three types of random pentagonal chains (cf. Figure 1) are obtained.http://ijmc.kashanu.ac.ir/article_5282_449688029ecc656d9f4df9bdb60bf5d5.pdf