What is the main message conveyed through the lock and key anecdote?

• Locks are always malfunctioning.

• Every problem has a solution.

• Problems are meant to be ignored.

• Every problem is unsolvable.

What is the first step recommended for understanding basic mathematical concepts?

• Use solved examples from the textbook.

• Skip the theory and focus on exercises.

• Ignore the basic concepts.

• Cram all the formulas.

How can students avoid making silly mistakes in exams?

• By solving problems step by step and reviewing them.

• By skipping the review of their solutions.

• By cramming all the formulas.

• By ignoring the mistakes.

What is advised against when trying to remember formulas and theorems?

• Understanding the derivation of formulas.

• Using diagrams to recollect information.

• Cramming the formulas and theorems.

• Practicing regularly.

What is the suggested method to manage time effectively during exams?

• Attempting mock papers and practicing regularly.

• Ignoring the time and focusing on one question.

• Cramming all the information before the exam.

• Skipping difficult questions.