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Question (11)

QN0018291

Which number lies between 2³ and 4³ as a perfect cube?

(A) 16
(B) 25
(C) 27
(D) 36

Correct Answer: C

Explanation:

27 = 3³.

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Question (12)

QN0018292

The value of 12³ is:

(A) 144
(B) 1728
(C) 1331
(D) 2197

Correct Answer: B

Explanation:

12 × 12 × 12 = 1728.

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Question (13)

QN0018293

Which cube ends with digit 8?

(A) 2³
(B) 3³
(C) 4³
(D) 5³

Correct Answer: A

Explanation:

2³ = 8.

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Question (14)

QN0018294

The value of 15³ is:

(A) 225
(B) 1125
(C) 3375
(D) 3750

Correct Answer: C

Explanation:

15 × 15 × 15 = 3375.

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Question (15)

QN0018295

Which of the following numbers is a perfect cube?

(A) 343
(B) 350
(C) 360
(D) 370

Correct Answer: A

Explanation:

343 = 7³.

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Question (16)

QN0018296

The cube of 19 is:

(A) 6859
(B) 7290
(C) 4913
(D) 5832

Correct Answer: A

Explanation:

19³ = 6859.

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Question (17)

QN0018297

Which digit can appear in the units place of a cube number?

(A) 2
(B) 3
(C) 7
(D) All of these

Correct Answer: D

Explanation:

Cube numbers can end with any digit from 0 to 9.

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Question (18)

QN0018298

Can a cube number end with exactly two zeros?

(A) Always
(B) Never
(C) Sometimes
(D) Only for even numbers

Correct Answer: B

Explanation:

Cubes cannot end with exactly two zeros.

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Question (19)

QN0018299

The value of (–6)³ is:

(A) 216
(B) –216
(C) 36
(D) –36

Correct Answer: B

Explanation:

(–6) × (–6) × (–6) = –216.

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Question (20)

QN0018300

Which of the following is the cube of a fraction?

(A) (4/6) × (4/6)
(B) (4/6) × (4/6) × (4/6)
(C) 4 × 6 × 6
(D) 4 + 6 + 6

Correct Answer: B

Explanation:

A cube means multiplying the fraction three times by itself.

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