This topic is highly subjective and differs from case to case.In the US, students with no backlogs are preferred. However, specific American colleges always have room for students with a limit of five backlogs. You will need to obtain a higher score on the GRE if you have 7-8 backlogs. Australia has a similar case. On the other hand, countries such as the UK are much more lenient and accept up to 15 backlogs. Canada only accepts applications with five backlogs.