# Computer Organization Questions and Answers – Representation of Floating Number

This set of Computer Organization Question Bank focuses on “Representation of Floating Number”.

1. The decimal numbers represented in the computer are called as floating point numbers, as the decimal point floats through the number.
a) True
b) False

Explanation: By doing this the computer is capable of accommodating the large float numbers also.

2. The numbers written to the power of 10 in the representation of decimal numbers are called as _____
a) Height factors
b) Size factors
c) Scale factors
d) None of the mentioned

Explanation: These are called as scale factors cause they’re responsible in determining the degree of specification of a number.

3. If the decimal point is placed to the right of the first significant digit, then the number is called ________
a) Orthogonal
b) Normalized
c) Determinate
d) None of the mentioned

Explanation: None.

4. ________ constitute the representation of the floating number.
a) Sign
b) Significant digits
c) Scale factor
d) All of the mentioned

Explanation: The following factors are responsible for the representation of the number.

5. The sign followed by the string of digits is called as ______
a) Significant
b) Determinant
c) Mantissa
d) Exponent

Explanation: The mantissa also consists of the decimal point.

Sanfoundry Certification Contest of the Month is Live. 100+ Subjects. Participate Now!

6. In IEEE 32-bit representations, the mantissa of the fraction is said to occupy ______ bits.
a) 24
b) 23
c) 20
d) 16

Explanation: The mantissa is made to occupy 23 bits, with 8 bit exponent.

7. The normalized representation of 0.0010110 * 2 9 is _______
a) 0 10001000 0010110
b) 0 10000101 0110
c) 0 10101010 1110
d) 0 11110100 11100

Explanation: Normalized representation is done by shifting the decimal point.

8. The 32 bit representation of the decimal number is called as ___________
a) Double-precision
b) Single-precision
c) Extended format
d) None of the mentioned

Explanation: None.

9. In 32 bit representation the scale factor as a range of ________
a) -128 to 127
b) -256 to 255
c) 0 to 255
d) None of the mentioned

Explanation: Since the exponent field has only 8 bits to store the value.

10. In double precision format, the size of the mantissa is ______
a) 32 bit
b) 52 bit
c) 64 bit
d) 72 bit

Explanation: The double precision format is also called as 64 bit representation.

Sanfoundry Global Education & Learning Series – Computer Organisation and Architecture.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]