A byte is a?

bytes, megabytes and Gigabytes are the units for measuring the amout of data on a computer. 1024 megabytes are a gigabyte

26938034880512 bytes (24.5*1024*1024*1024). 215504279044096 bits(8bits=1byte)

Because it takes the 24 bytes to be able to store the 1000 megabytes as it supposedly being a "gigabyte" which people thought was only 1000 megabytes originally.

ONE Thousand bytes =1kilo byte. Remember the prefix k for kilo means a thousand of the quantity. Eg 1km means a thousand metres 1kg means a thousand gramms

Because the people who decided to name them bits decided that 8 bits makes up a byte. It is just like asking why is a knife called a knife no real reason.