About This Set
These 25 questions are at real Tier 1 level and are worded the way SSC writes them. The wrong options are the answers the usual mistakes give, such as leaving out the train's own length or adding two speeds that should be subtracted. Expect a unit change inside a longer question, average speed over three parts, chases where one person starts later, trains passing moving people, and boats with two trips to compare. Take about 25 minutes, close to exam pace, and check only at the end. 20 or more right means you can move on to Practice Set 3.