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प्रश्न
Using the method of successive subtraction examine whether or not the following numbers is perfect cube 792 .
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उत्तर
We have:
792
1
791
7
784
19
765
37
728
61
667
91
576
127
449
169
280
217
63
∵ The next number to be subtracted is 271, which is greater than 63.
∴ 792 is not a perfect cube.
संबंधित प्रश्न
Find the cube root of the following number by the prime factorisation method.
110592
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
Using the method of successive subtraction examine whether or not the following numbers is perfect cube 130 .
\[\sqrt[3]{\frac{729}{1331}} = \frac{9}{. . .}\]
Evaluate:
Evaluate:
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5112 .
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833 .
Using prime factorisation, find which of the following are perfect cubes.
343
