Number Base Quiz

Which of the following bases is known as the binary system?

• Base2

• Base8

• Base10

• Base16

Answer explanation

The binary system is known as Base2, where each digit can only be 0 or 1. Therefore, the correct choice is Base2.

In the hexadecimal number system, what digit comes after 9?

• 10

• A

• B

• F

Answer explanation

In the hexadecimal system, after 9 comes A, which represents the decimal value of 10. Therefore, the digit that comes after 9 is A.

How many unique digits are used in the octal (Base8) number system?

• 7

• 8

• 9

• 10

Answer explanation

In the octal number system, unique digits range from 0 to 7. Therefore, there are 8 unique digits used in the octal system.

In the binary system, which of the following represents the number five in decimal?

• 100

• 101

• 110

• 111

Answer explanation

In the binary system, 101 represents the number five in decimal. Each digit in binary represents a power of 2, so 1*2^2 + 0*2^1 + 1*2^0 = 5.

Which number base is most commonly used in everyday arithmetic and measurements?

• Base2

• Base8

• Base10

• Base16

Answer explanation

Base10 is the most commonly used number base in everyday arithmetic and measurements, also known as the decimal system.

What is the next digit after 7 in the hexadecimal (Base16) number system?

• 8

• 9

• A

• B

Answer explanation

The next digit after 7 in the octal system is 8, as in octal, the digits range from 0 to 7 before incrementing to the next place value.

Which number base is commonly used in computer science and programming?

• Base2

• Base8

• Base10

• Base16

Answer explanation

Base2, also known as binary, is commonly used in computer science and programming due to its compatibility with digital systems and representing data in a simple on/off format.

In the hexadecimal system, what digit represents the number twelve in decimal?

• C

• D

• E

• F

Answer explanation

In the hexadecimal system, the digit 'C' represents the number twelve in decimal. Each digit in hexadecimal corresponds to a value from 0 to 15, with 'C' representing 12.