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Question (1)

QN0018600

Which number system is commonly called a base-10 system?

(A) Binary system
(B) Decimal system
(C) Base-5 system
(D) Base-20 system

Correct Answer: B

Explanation:

Decimal system has base 10.

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Question (2)

QN0018601

In a base-10 system, how many digits are used?

(A) 8
(B) 9
(C) 10
(D) 11

Correct Answer: C

Explanation:

Digits 0 to 9 are used.

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Question (3)

QN0018602

Which set of digits is used in the decimal number system?

(A) 0–8
(B) 1–10
(C) 0–9
(D) 1–9

Correct Answer: C

Explanation:

Decimal system uses digits 0 to 9.

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Question (4)

QN0018603

The value of the digit 5 in the number 583 depends on its:

(A) Shape
(B) Colour
(C) Position
(D) Size

Correct Answer: C

Explanation:

Place value depends on position.

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Question (5)

QN0018604

In the decimal system, the place values are powers of:

(A) 2
(B) 5
(C) 8
(D) 10

Correct Answer: D

Explanation:

Decimal is a base-10 system.

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Question (6)

QN0018605

Which of the following is the place value of the digit 7 in 7,000?

(A) 7 × 10⁰
(B) 7 × 10¹
(C) 7 × 10²
(D) 7 × 10³

Correct Answer: D

Explanation:

7000 = 7 × 10³.

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Question (7)

QN0018606

Which expression correctly represents 482?

(A) 4×10² + 8×10¹ + 2×10⁰
(B) 4×10³ + 8×10² + 2×10¹
(C) 4×10¹ + 8×10² + 2×10⁰
(D) 4×10² + 8×10⁰ + 2×10¹

Correct Answer: A

Explanation:

482 = 4×100 + 8×10 + 2.

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Question (8)

QN0018607

What is the base of the binary number system?

(A) 5
(B) 8
(C) 2
(D) 10

Correct Answer: C

Explanation:

Binary means base 2.

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Question (9)

QN0018608

Which digits are used in a base-2 system?

(A) 0, 1
(B) 1, 2
(C) 0, 1, 2
(D) 0–9

Correct Answer: A

Explanation:

Only 0 and 1 are used.

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Question (10)

QN0018609

In a base-2 system, the place values are powers of:

(A) 10
(B) 5
(C) 8
(D) 2

Correct Answer: D

Explanation:

Binary place values are powers of 2.

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Question (1)

Which number system is commonly called a base-10 system?

Explanation:

Link:

Question (2)

In a base-10 system, how many digits are used?

Explanation:

Link:

Question (3)

Which set of digits is used in the decimal number system?

Explanation:

Link:

Question (4)

The value of the digit 5 in the number 583 depends on its:

Explanation:

Link:

Question (5)

In the decimal system, the place values are powers of:

Explanation:

Link:

Question (6)

Which of the following is the place value of the digit 7 in 7,000?

Explanation:

Link:

Question (7)

Which expression correctly represents 482?

Explanation:

Link:

Question (8)

What is the base of the binary number system?

Explanation:

Link:

Question (9)

Which digits are used in a base-2 system?

Explanation:

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Question (10)

In a base-2 system, the place values are powers of:

Explanation:

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