Introduction:
The Quantitative Aptitude section of the SSC CHSL exam often includes complex formulas and concepts that can be challenging to remember. However, with the right approach and some effective strategies, you can improve your ability to recall and apply these formulas and concepts.

1. Understand the underlying concepts:
Before trying to memorize formulas, it is essential to understand the underlying concepts. By understanding the logic and principles behind the formulas, you can better comprehend their applications and derive them if needed. This understanding will make it easier to remember and apply the formulas during the exam.

2. Break down complex formulas:
Many complex formulas can be broken down into smaller, more manageable parts. Identify the different elements within the formula and understand their individual meanings and relationships. By breaking down the formula, you can focus on memorizing each component separately, making it easier to recall the formula as a whole.

3. Practice regularly:
Regular practice is crucial for remembering complex formulas and concepts. Solve a variety of quantitative aptitude questions that require the use of these formulas. The more you practice, the more familiar and comfortable you will become with the formulas, reducing the chances of forgetting them during the exam.

4. Create mnemonic devices:
Mnemonic devices are memory aids that can help you remember complex formulas or concepts. These can be acronyms, rhymes, or visual associations that link the formula to something more memorable. Create your own mnemonic devices or use existing ones to facilitate better recall during the exam.

5. Understand the derivation of formulas:
Understanding the derivation of formulas can help you remember them better. Try to learn the step-by-step process of how a particular formula is derived. This understanding not only enhances your knowledge but also helps in remembering the formulas more effectively.

6. Make use of flashcards:
Flashcards are a useful tool for memorization. Create flashcards for each formula or concept, with the formula on one side and its meaning or application on the other. Review these flashcards regularly, testing yourself on the formulas' recall. This active recall technique aids in long-term memory retention.

7. Use EduRev resources:
EduRev provides a vast array of study materials, including video lectures, practice questions, and notes, specifically designed for the SSC CHSL exam. Utilize these resources to reinforce your understanding of complex formulas and concepts. Regularly revise and practice with the help of EduRev's comprehensive study materials.

Conclusion:
Remembering complex formulas and concepts in the Quantitative Aptitude section of the SSC CHSL exam requires a combination of understanding, practice, and effective memory techniques. By breaking down formulas, practicing regularly, creating mnemonic devices, understanding derivations, using flashcards, and utilizing EduRev resources, you can enhance your ability to recall and apply these formulas during the exam. Stay consistent and focused in your preparation, and you will be well-prepared to tackle the Quantitative Aptitude section with confidence.