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Trick & shortcut to find Cube Root of a number Video Lecture | Quantitative Aptitude for SSC CGL

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FAQs on Trick & shortcut to find Cube Root of a number Video Lecture - Quantitative Aptitude for SSC CGL

1. What is the trick to find the cube root of a number?
Ans. To find the cube root of a number, you can use the prime factorization method. First, express the given number as the product of prime factors. Then, group the prime factors in sets of three and take one factor from each set. The product of these factors will be the cube root of the number.
2. Is there a shortcut to finding the cube root of a number?
Ans. Yes, there is a shortcut called the estimation method. In this method, you can estimate the cube root of a number by finding the nearest perfect cube to that number. Then, using the formula (Estimated cube root + Error) = (Exact cube root), you can calculate the approximate cube root.
3. Can I find the cube root of a negative number using these tricks and shortcuts?
Ans. Yes, these tricks and shortcuts can be used to find the cube root of negative numbers as well. The process remains the same, where you can factorize the absolute value of the negative number, find the cube root using the methods mentioned, and then assign the appropriate sign based on the original number.
4. Are there any limitations to using these tricks for finding cube roots?
Ans. These tricks and shortcuts work well for most numbers, but they may not be as accurate for very large or very small numbers. Additionally, these methods provide approximate values and not exact cube roots. For precise calculations, it is recommended to use calculators or computer programs.
5. Can I find the cube root of a decimal or fraction using these methods?
Ans. Yes, you can find the cube root of a decimal or fraction using the same tricks and shortcuts. Convert the decimal or fraction into an equivalent form with integers, and then apply the methods mentioned earlier. However, keep in mind that the calculations may involve more steps and can be more complex than finding the cube root of whole numbers.
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