Question

Which data type requires the greatest number of bytes in computer memory? A. character B. integer C. single-precision number D. double-precision number E. all require the same amount of storage

Answer 1

A double-precision number contains the most amount of memory.  In programming language, there are often 2 types of decimal numbers.  In java, for example there are floats and doubles.  Doubles have more bytes associated, and can "go out" to further decimal places than floats.

Answer 2

The correct answer is: D. double-precision number

A double precision number takes up double the memory space required for a singe precision number.

Memory in computing is a device used for temporary or permanent storage of data. The term double precision implies that double the required number of bits is used to represent the number.

Hence, if single precision makes use of 4 bytes when representing a floating-point number, double precision makes use of 8 bytes when representing a  floating-point number.

Therefore, a double-precision number requires the greatest number of bytes in computer memory. Characters require only about 1 byte while integers require about 4 bytes.

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