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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.
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