Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.
[[0, 1], [2, 3], [4, 5]]
[[0, 1, 2], [3, 4, 5]]
[[0, 3], [1, 4], [2, 5]]
[0, 1, 2, 3, 4, 5]
Continue with nearby questions to strengthen the same chapter concept while you still have the context fresh in mind.