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प्रश्न
Using the method of successive subtraction examine whether or not the following numbers is perfect cube 130 .
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उत्तर
We have:
130
1
129
7
122
19
103
37
66
61
5
∵ The next number to be subtracted is 91, which is greater than 5.
∴ 130 is not a perfect cube.
संबंधित प्रश्न
Find the cube root of the following number by the prime factorisation method.
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You are told that 1331 is a perfect cube. Can you guess without factorization what is its cube root? Similarly, guess the cube roots of 4913, 12167, 32768
\[\sqrt[3]{1728} = 4 \times . . .\]
\[\sqrt[3]{\frac{512}{. . .}} = \frac{8}{13}\]
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What is the length of the side of a cube whose volume is 275 cm3. Make use of the table for the cube root.
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