Number systems

How many nibbles are there in the binary number 1111000001100101?

• 5

• 2

• 4

• 6

There are 9 bits in a binary number. The binary weight of the Most Significant bit is,

• 128

• 256

• 512

• 1024

The decimal equivalent of the binary number 101.001 is

• 6.125

• 4.625

• 5.125

• 8.625

A calculator has 2MB memory. What is the decimal equivalent of 2 MB?

• 2097152

• 4194304

• 5242880

• 1048576

A digital computer processes binary numbers that are 32 bit long. If a 32 bit number has all 1's what is the decimal equivalent?

• 4294967295

• 4294967294

• 4294967292

• 4294967291

The Octal number for the binary number 1101110001 is

• 1561

• 1451

• 1671

• 1651

Thousands of binary instructions and data can be stored in a computer memory. A typical microprocessor has 65536 addresses each storing a byte. Suppose the first address is 00111100, what is its hexadecimal equivalent

• 3A

• 3B

• 3C

• 3D

A smartphone has 128KB of memory. How many bytes does this represent?

• 131070

• 131076

• 131078

• 131072

An algebraic expression decoded from the signals of an Alien planet is 41/3 = 13. How many fingers do you think the Alien has to perform this arithmetic.

• 8

• 7

• 6

• 5

The base 10 number system equivalent for 10101 binary number is

• 24

• 23

• 22

• 21