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how to find cube root easily |
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Answer» So to find cube root easily ( works good for perfect cube) 1. Note the unit digit of given number.2. Think of number from 1 to 9 whose cube have same unit digit.3. Use some intuition to find the nearest number with it. Ex: cube root of 10648So,2³ is 8 So last digit of cube root must be 2we know cube of 20³ = 8000So, cube root must be 20 to 25,Therefore only possible number is 22.whose cube is 10648. |
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