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प्रश्न
Using the method of successive subtraction examine whether or not the following numbers is perfect cube 345 .
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उत्तर
We have:
345
1
344
7
337
19
318
37
281
61
220
91
129
127
2
∵ The next number to be subtracted is 161, which is greater than 2.
∴ 345 is not a perfect cube.
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संबंधित प्रश्न
Find the cube root of the following number by the prime factorisation method.
91125
\[\sqrt[3]{125 \times 27} = 3 \times . . .\]
\[\sqrt[3]{\frac{729}{1331}} = \frac{9}{. . .}\]
Evaluate:
Evaluate:
\[\sqrt[3]{121} \times \sqrt[3]{297}\]
Making use of the cube root table, find the cube root
7532 .
Making use of the cube root table, find the cube root
833 .
Find the cube root of 216.
Find the cube root of -1331.
Using prime factorisation, find which of the following are perfect cubes.
729
