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Squares Tricks: Square of a Number Close to the Base Video Lecture | Quantitative Aptitude (Quant) - CAT

185 videos|158 docs|113 tests

FAQs on Squares Tricks: Square of a Number Close to the Base Video Lecture - Quantitative Aptitude (Quant) - CAT

1. What is the trick for finding the square of a number close to the base?
Ans. The trick for finding the square of a number close to the base is to use the formula (base ± difference)^2 = base^2 ± 2 * base * difference + difference^2.
2. How does the trick for finding the square of a number close to the base work?
Ans. The trick works by taking advantage of the properties of algebraic expansion. By using the formula (base ± difference)^2, we can expand it to obtain the square of the base, twice the product of the base and the difference, and the square of the difference.
3. Can this trick be used for any number close to the base?
Ans. Yes, this trick can be used for any number close to the base. The formula (base ± difference)^2 can be applied to any number, as long as the difference is small enough to be manageable in mental calculations.
4. Are there any limitations or restrictions to using this trick?
Ans. There are no specific limitations or restrictions to using this trick, but it is most effective for small differences and bases. As the difference or base becomes larger, mental calculations may become more challenging and prone to errors.
5. How can I practice and improve my skills in using this trick?
Ans. The best way to practice and improve your skills in using this trick is to solve various examples and exercises. Start with simple numbers and gradually increase the complexity. Additionally, you can use online resources or mobile apps that provide practice questions for squaring numbers close to the base.
185 videos|158 docs|113 tests

Timeline

00:08 Trick to find the square of a number close to the base (10)
02:00 Number of digits in the answer
02:24 find the square of a number (example)
03:55 Trick to find the square of a number close to the base (100)
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