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Question (21)

QN0033377

Which statement is always true?

(A) A number is never a multiple of itself.
(B) The number itself is always a multiple of itself.
(C) Every number has only one factor.
(D) Every factor is even.

Correct Answer: B

Explanation:

Every number is a multiple of itself.

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Question (22)

QN0033378

Which of the following is a factor of 12?

(A) 5
(B) 7
(C) 6
(D) 8

Correct Answer: C

Explanation:

6 divides 12 exactly.

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Question (23)

QN0033379

Which pair of numbers has 12 as a common multiple?

(A) 3 and 4
(B) 5 and 7
(C) 8 and 10
(D) 9 and 11

Correct Answer: A

Explanation:

12 is divisible by both 3 and 4.

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Question (24)

QN0033380

If the hidden number machine uses multiplier 2 and outputs 36, the hidden number could be

(A) 12
(B) 18
(C) 20
(D) 24

Correct Answer: B

Explanation:

18 × 2 = 36.

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Question (25)

QN0033381

A machine multiplies every input by 4. Which input gives output 48?

(A) 10
(B) 12
(C) 14
(D) 16

Correct Answer: B

Explanation:

12 × 4 = 48.

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Question (26)

QN0033382

If the outputs are 28, 36, 48 and 72, which number cannot be the multiplier?

(A) 1
(B) 2
(C) 4
(D) 5

Correct Answer: D

Explanation:

36 and 28 are not divisible by 5.

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Question (27)

QN0033383

Which factor pair of 32 is correct?

(A) 4 × 8
(B) 5 × 6
(C) 3 × 10
(D) 7 × 4

Correct Answer: A

Explanation:

4 × 8 = 32.

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Question (28)

QN0033384

Which array cannot represent the number 10?

(A) 1 × 10
(B) 2 × 5
(C) 5 × 2
(D) 3 × 4

Correct Answer: D

Explanation:

3 × 4 = 12, not 10.

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Question (29)

QN0033385

Which number is both a factor and a multiple of 12?

(A) 3
(B) 4
(C) 6
(D) 12

Correct Answer: D

Explanation:

12 divides itself and is also a multiple of itself.

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Question (30)

QN0033386

Which statement correctly defines a common factor?

(A) It divides only one number.
(B) It exactly divides two or more numbers.
(C) It is greater than all numbers.
(D) It is always odd.

Correct Answer: B

Explanation:

A common factor divides each given number exactly.

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Question (21)

Which statement is always true?

Explanation:

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Question (22)

Which of the following is a factor of 12?

Explanation:

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Question (23)

Which pair of numbers has 12 as a common multiple?

Explanation:

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Question (24)

If the hidden number machine uses multiplier 2 and outputs 36, the hidden number could be

Explanation:

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Question (25)

A machine multiplies every input by 4. Which input gives output 48?

Explanation:

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Question (26)

If the outputs are 28, 36, 48 and 72, which number cannot be the multiplier?

Explanation:

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Question (27)

Which factor pair of 32 is correct?

Explanation:

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Question (28)

Which array cannot represent the number 10?

Explanation:

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Question (29)

Which number is both a factor and a multiple of 12?

Explanation:

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Question (30)

Which statement correctly defines a common factor?

Explanation:

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