It ultimately depends on your learning style and what works best for you. Both mnemonic techniques and solving numerical problems can be effective study methods for Commerce.

Mnemonic techniques, such as creating acronyms or rhymes to remember information, can be helpful for memorizing concepts, formulas, or key terms. This method is particularly useful when you need to recall information for exams or essays.

On the other hand, solving numerical problems can enhance your understanding of Commerce concepts and improve your problem-solving skills. This approach is especially beneficial for subjects like accounting or finance, where hands-on practice is crucial.

To maximize your studying, you may want to combine both techniques. Start by using mnemonic devices to remember key information and then apply that knowledge to solve numerical problems. This way, you can reinforce your understanding of Commerce concepts while also improving your memory and recall abilities.

Ultimately, it's important to find a study method that suits your learning style and preferences. Experiment with different techniques to determine which ones work best for you.