Chapter 2: Number Systems — Online MCQ Test
COMPUTER APPLICATIONS · CLASS 11th · Tamil Nadu State Board
Practice Chapter 2: Number Systems with a free chapter-wise online MCQ test.
This chapter covers: Focusing on data representation this chapter covers positional number systems including binary octal decimal and hexadecimal. Students learn base conversions binary arithmetic sign....
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Chapter 2: Number Systems — Important Questions & Answers
What is the base of the Hexadecimal number system?
- A. 2
- B. 8
- C. 10
- D. 16
Answer: D. 16
The Hexadecimal number system uses 16 symbols, representing values from 0 to 9 and A to F.
The Hexadecimal number system uses 16 symbols, representing values from 0 to 9 and A to F.
Which of the following is NOT a positional number system?
- A. Decimal
- B. Binary
- C. Roman Numeral System
- D. Octal
Answer: C. Roman Numeral System
In the Roman numeral system, the value of a symbol does not depend on its position, making it a non-positional system.
In the Roman numeral system, the value of a symbol does not depend on its position, making it a non-positional system.
Convert the binary number 1011 to decimal.
- A. 9
- B. 10
- C. 11
- D. 13
Answer: C. 11
(1 * 2^3) + (0 * 2^2) + (1 * 2^1) + (1 * 2^0) = 8 + 0 + 2 + 1 = 11.
(1 * 2^3) + (0 * 2^2) + (1 * 2^1) + (1 * 2^0) = 8 + 0 + 2 + 1 = 11.
If a number system has base 'r', what is the largest digit possible?
- A. r
- B. r+1
- C. r-1
- D. 2r
Answer: C. r-1
In any positional number system with base 'r', digits range from 0 to r-1.
In any positional number system with base 'r', digits range from 0 to r-1.
Which expression correctly defines the decimal value of a number (d_n d_{n-1} ... d_0) in base B?
- A. Sum of (d_i * B^i)
- B. Sum of (d_i * i^B)
- C. Product of (d_i * B^i)
- D. Sum of (d_i + B^i)
Answer: A. Sum of (d_i * B^i)
The value of any number in base B is calculated by the sum of each digit multiplied by the base raised to the power of its position index.
The value of any number in base B is calculated by the sum of each digit multiplied by the base raised to the power of its position index.