Number Sequences (Version A)

This practice test contains 20 questions, each consisting of a sequence of seven distinct numbers. Each sequence is arranged according to a certain rule, and the final, eighth number in the sequence is always replaced by three dots. Your task, within the 9-minute time limit, is to select, for each sequence, the number that correctly completes it at the place marked by three dots, based on the given rule. In the example below, you can try the way you will answer questions in this test.