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प्रश्न
If a2 ends in 9, then a3 ends in 7.
पर्याय
True
False
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उत्तर
This statement is False.
Explanation:
∵ (7)2 = 49 ends in 9 and (7)3, i.e. 343 does not end in 7.
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संबंधित प्रश्न
Write the cubes of 5 natural numbers which are multiples of 3 and verify the followings:
'The cube of a natural number which is a multiple of 3 is a multiple of 27'
Write the cubes of 5 natural numbers which are of the form 3n + 1 (e.g. 4, 7, 10, ...) and verify the following:
'The cube of a natural number of the form 3n + 1 is a natural number of the same form i.e. when divided by 3 it leaves the remainder 1'.
Which of the following is perfect cube?
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Write true (T) or false (F) for the following statement:
For an integer a, a3 is always greater than a2.
Find the cube root of the following natural number 343 .
Show that: \[\sqrt[3]{27} \times \sqrt[3]{64} = \sqrt[3]{27 \times 64}\]
Find if the following number is a perfect cube?
1331
Find the cube-root of 1728.
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