Lesson 4.5.2.1
4.5.2.1 Number bases Quiz: AQA Computer Science, Unit 5
20 questions
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Lesson 4.5.2.1, Number bases: 20 multiple choice questions for the AQA Computer Science (7517), Unit 5: Fundamentals of data representation, written with Revision Ninja.
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The 20 questions
-
What is the base of hexadecimal notation?
- 16
- 2
- 10
- 8
-
Which digits does binary, which is base 2, use?
- 1 to 9
- 0 to 9
- 0 and 1
- 0 to 7
-
How is the decimal number 67 written using subscript notation?
- 67_10
- 67_2
- 67_8
- 67_16
-
Which hexadecimal digit represents the decimal value 10?
- F
- B
- A
- E
-
Why is hexadecimal used as a shorthand for binary?
- Each hexadecimal digit represents exactly two binary digits
- Each hexadecimal digit is the same as one decimal digit
- Each hexadecimal digit represents exactly four binary digits
- Each hexadecimal digit replaces exactly eight binary digits
-
What is the decimal value of the binary number 1010?
- 10
- 5
- 8
- 12
-
Which base is the decimal number system?
- Base 8
- Base 2
- Base 10
- Base 16
-
Convert the binary number 1001 1011 to decimal.
- 155
- 139
- 165
- 145
-
Convert the decimal number 67 to binary.
- 1100001
- 1000101
- 1000011
- 0110011
-
Convert the hexadecimal number AE to binary.
- 10011110
- 11101010
- 10101110
- 10101011
-
Convert the hexadecimal number AE to decimal.
- 174
- 140
- 164
- 170
-
Convert the decimal number 255 to hexadecimal.
- F0
- FF
- EF
- FE
-
Convert the hexadecimal number 3F to decimal.
- 63
- 48
- 51
- 75
-
Write the binary number 1111 0000 in hexadecimal.
- F0
- 0F
- FF
- E0
-
What is the binary form of the decimal number 8?
- 0111
- 1100
- 1000
- 10001
-
A byte is written as 0x7F. What are its decimal value and binary form?
- 112 and 01110000
- 119 and 01110111
- 127 and 01111111
- 128 and 10000000
-
What is the largest decimal number that can be written with three hexadecimal digits?
- 4095
- 4096
- 3375
- 1023
-
Why is the base 2 number 1111 equal to F in base 16?
- Four binary digits can take 16 values, and 1111 equals 15, which is written F
- Base 16 numbers always end in F whenever they are converted from binary to hexadecimal
- Both are written with the same symbols, so the two values are equal in every base used
- F is a base-2 symbol that is used to write the value fifteen in binary notation
-
Convert the binary number 1101 to hexadecimal.
- D
- E
- B
- C
-
What is the decimal value of the hexadecimal number 2B0?
- 43
- 523
- 688
- 208
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