Ex 6.1, 2 (ii) - Chapter 6 Class 8 Cubes and Cube Roots

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Find smallest number to multiply 256, to obtain perfect cube - Teachoo - Ex 6.1

part 2 - Ex 6.1, 2 (ii) - Ex 6.1 - Serial order wise - Chapter 6 Class 8 Cubes and Cube Roots

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Ex 6.1, 2 Find the smallest number by which each of the following numbers must be multiplied to obtain a perfect cube. (ii) 256 We see that 256 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 Since 2 does not occur in triplets, ∴ 256 is not a perfect cube. So, we multiply by 2 to make triplet So, our number becomes 256 × 2 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 Now, it becomes a perfect cube. So, we multiply 256 by 2 to make it a perfect cube

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