Binary and decimal systems

The binary number 11101 is equivalent to:

• 29

• 39

• 28

• 25

Write any binary number greater than 140 and less than 142

How do You write 01001010 in decimal?

How do You write 255 in binary?

Where is decimal number?

• (256)10

• 11111111

• (256)8

• (257.7)100