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Which of the following is NOT equal to the cube of an integer? (A) 2^

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Which of the following is NOT equal to the cube of an integer? (A) 2^ [#permalink] New post   28 Oct 2022, 00:34
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Which of the following is NOT equal to the cube of an integer?

(A) 2^7 − 3
(B) 6√16 + 3
(C) 3^3 × 3
(D) √25 + 3
(E) 2^2 − 3


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C
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Re: Which of the following is NOT equal to the cube of an integer? (A) 2^ [#permalink] New post   28 Oct 2022, 04:07
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We need to find Which of the following is NOT equal to the cube of an integer

(A) 2^7 − 3 = 125 = \(5^3\) => Cube of an Integer

(B) 6√16 + 3 = 6*4 + 3 = 27 = \(3^3\) => Cube of an Integer

(C) 3^3 × 3 = 81 => \(3^4\) => NOT a Cube of an Integer
In Test we don't need to solve further, but I am solving to complete the solution.

(D) √25 + 3 = 5 + 3 = 8 = \(2^3\) => Cube of an Integer

(E) 2^2 − 3 = 4 - 3 = 1 = \(1^3\) => Cube of an Integer

So, Answer will be C
Hope it helps!
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Re: Which of the following is NOT equal to the cube of an integer? (A) 2^ [#permalink]
28 Oct 2022, 04:07
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