EWT | Academic Question

Questions
Question (1)
QN0018281
A number obtained by multiplying a number by itself three times is called a:
  • (A) Square number
  • (B) Prime number
  • (C) Cube number
  • (D) Composite number

Correct Answer: C
Explanation:

A cube number is obtained by multiplying a number by itself three times.

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Question (2)
QN0018282
Which of the following is a perfect cube?
  • (A) 16
  • (B) 24
  • (C) 27
  • (D) 36

Correct Answer: C
Explanation:

27 = 3³.

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Question (3)
QN0018283
The value of 2³ is:
  • (A) 4
  • (B) 6
  • (C) 8
  • (D) 16

Correct Answer: C
Explanation:

2 × 2 × 2 = 8.

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Question (4)
QN0018284
The value of 4³ is:
  • (A) 16
  • (B) 32
  • (C) 64
  • (D) 128

Correct Answer: C
Explanation:

4 × 4 × 4 = 64.

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Question (5)
QN0018285
Which of the following is not a perfect cube?
  • (A) 8
  • (B) 27
  • (C) 64
  • (D) 81

Correct Answer: D
Explanation:

81 is not a cube number.

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Question (6)
QN0018286
In general, n × n × n is written as:
  • (A)
  • (B) 3n
  • (C)
  • (D) n + 3

Correct Answer: C
Explanation:

n × n × n = n³.

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Question (7)
QN0018287
How many unit cubes make a cube of side 3 units?
  • (A) 9
  • (B) 18
  • (C) 27
  • (D) 36

Correct Answer: C
Explanation:

Number of unit cubes = 3³ = 27.

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Question (8)
QN0018288
Which of the following is equal to 5³?
  • (A) 25
  • (B) 75
  • (C) 100
  • (D) 125

Correct Answer: D
Explanation:

5 × 5 × 5 = 125.

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Question (9)
QN0018289
The cube of 10 is:
  • (A) 100
  • (B) 1000
  • (C) 10000
  • (D) 100000

Correct Answer: B
Explanation:

10³ = 1000.

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Question (10)
QN0018290
The exact definition of a perfect cube is:
  • (A) Product of three consecutive numbers
  • (B) Product of a number by itself three times
  • (C) Product of two equal numbers
  • (D) Sum of three equal numbers

Correct Answer: B
Explanation:

A perfect cube is the product of a number by itself three times.

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