What is GTO in SSB Interview ? In This Blog we are going to Discuss about GTO Series in Detail. The GTO series comprising of nine tasks is spread over two days. Certain tasks are conducted on day one and the balance on day two. Before the start of the tasks the candidates will be divide in groups of ten. This group of ten candidates will be in a serial order ,ie, ( 1-10,11-20,21-30 &31-40). This grouping will not change for the two days of GTO series. Once the groups are separated, a GTO ( Group Testing Officer ) will come to each group. GTO will