Golden Rules of Solving Square and Cube Root for CAT - 1 Video Lecture | IBPS PO Prelims & Mains Preparation - Bank Exams

Ans. The golden rules for solving square and cube roots in CAT are as follows: 1. Memorize the squares and cubes of numbers up to 30 to quickly identify them. 2. Understand the basic properties of square and cube roots, such as the fact that the square root of a positive number always gives a positive result and the cube root of any number can be positive or negative. 3. Use prime factorization to simplify the calculation of square and cube roots. Break down the number into its prime factors and group them in pairs for square roots and in groups of three for cube roots. 4. Practice mental calculation techniques to quickly estimate square and cube roots without using a calculator. 5. Solve practice questions and mock tests to improve your speed and accuracy in solving square and cube roots.

Ans. Memorizing squares and cubes of numbers up to 30 can greatly assist in solving square and cube roots. By memorizing these values, you can quickly recognize them in problems and save time in calculations. For example, if you come across the number 49, you will immediately know that its square root is 7. Similarly, if you encounter the number 27, you will recognize it as the cube of 3. This knowledge enables you to solve square and cube root problems more efficiently during the CAT exam.

Ans. Prime factorization is a method of breaking down a number into its prime factors. This process helps simplify the calculation of square and cube roots by allowing you to group the factors. For finding square roots, you group the factors in pairs, while for cube roots, you group them in groups of three. For example, let's consider the number 144. Prime factorizing it gives us 2^4 * 3^2. When finding the square root, we can pair the factors as (2^2 * 3) * (2^2 * 3), which simplifies to 2^2 * 3 = 12. By applying prime factorization, we can quickly find the square root of 144 without having to manually calculate the multiplication.

Ans. The square root of a positive number always gives a positive result. However, the cube root of any number can be positive or negative. This is because a negative number raised to an odd power will give a negative result, while a negative number raised to an even power will give a positive result. Therefore, when solving cube root problems, it is important to consider both the positive and negative values as potential solutions.

Ans. To improve your speed and accuracy in solving square and cube roots for the CAT exam, you can follow these strategies: 1. Practice regularly with a variety of square and cube root problems to enhance your familiarity with different patterns and techniques. 2. Use mental calculation methods to estimate square and cube roots without relying heavily on a calculator. 3. Solve previous years' CAT question papers and take mock tests to simulate the exam environment and identify areas for improvement. 4. Focus on understanding the underlying concepts and properties of square and cube roots to develop a strong foundation. 5. Time yourself while solving practice problems to gradually increase your speed and efficiency.