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SI & CI Shortcuts Aptitude Tricks Video Lecture | Crash Course for SSC CGL (English)

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FAQs on SI & CI Shortcuts Aptitude Tricks Video Lecture - Crash Course for SSC CGL (English)

1. What are the shortcuts for calculating Simple Interest (SI) and Compound Interest (CI) in aptitude exams like SSC CGL?
Ans. There are several shortcuts for calculating SI and CI in aptitude exams. Some of the commonly used ones are: - For calculating SI, the formula is SI = P * R * T / 100, where P is the principal amount, R is the rate of interest, and T is the time period. - For calculating CI annually, the formula is CI = P * (1 + R/100)^T - P, where P is the principal amount, R is the rate of interest, and T is the time period. - For calculating CI half-yearly, the formula is CI = P * (1 + R/200)^(2*T) - P. - For calculating CI quarterly, the formula is CI = P * (1 + R/400)^(4*T) - P. - For calculating CI monthly, the formula is CI = P * (1 + R/1200)^(12*T) - P.
2. How can I use these shortcuts to solve SI and CI problems quickly in SSC CGL exams?
Ans. To solve SI and CI problems quickly, you can follow these steps: - Understand the given problem and identify the principal amount, rate of interest, and time period. - Use the appropriate formula for SI or CI based on the given information. - Apply the shortcut formula to calculate the SI or CI. - Substitute the values and simplify the equation to find the final answer. - Use approximation techniques if needed to speed up the calculation process. - Practice solving SI and CI problems using these shortcuts to improve speed and accuracy.
3. Can these shortcuts be used for any type of interest rate, such as simple or compound interest rates compounded annually, half-yearly, quarterly, or monthly?
Ans. Yes, these shortcuts can be used for any type of interest rate, whether it is simple or compound interest. The formulas mentioned earlier can be applied to calculate SI and CI for interest rates compounded annually, half-yearly, quarterly, or monthly. The only difference lies in the exponent of the interest rate formula, which is adjusted based on the compounding period (e.g., 2*T for half-yearly, 4*T for quarterly, and 12*T for monthly).
4. Are there any other shortcuts or tricks for solving SI and CI problems in SSC CGL exams?
Ans. Apart from the mentioned shortcuts, there are a few additional tricks that can help in solving SI and CI problems quickly: - Use unitary method: Break down the interest rates and time periods into smaller units (e.g., convert 3 years and 6 months to 3.5 years) to simplify calculations. - Memorize commonly used interest rate values: Remembering commonly used interest rates (e.g., 5%, 10%, 15%) can help in quickly estimating the final answer without performing detailed calculations. - Practice mental calculations: Improving mental math skills can significantly speed up the calculation process for SI and CI problems.
5. How can I practice and improve my skills in using these shortcuts for SI and CI problems in SSC CGL exams?
Ans. To practice and improve your skills in using these shortcuts for SI and CI problems: - Solve a variety of practice problems from previous SSC CGL exams or sample papers. - Time yourself while solving these problems to improve speed and efficiency. - Identify common patterns and strategies used in solving SI and CI problems. - Take online mock tests or quizzes that specifically focus on SI and CI questions. - Join study groups or seek guidance from experienced mentors who can provide additional tips and tricks for solving aptitude problems.
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