Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.
{1, 3, 5, 7, 9}
{0, 2, 4, 6, 8}
{2, 4, 6, 8, 10}
{10, 12, 14, 16}
Continue with nearby questions to strengthen the same chapter concept while you still have the context fresh in mind.