How is the number 5 represented in non-positional number system?

A.

IIIII

B.

5

C.

V

D.

v

Answer: Option A

Explanation:

In a non-positional number system, 1 is represented as I, 2 as II, 3 as III, 4 as IIII and therefore, 5 is represented as IIIII. This number system uses symbols for the representation of digits.

A device that uses positional notation to represent a decimal number:

A.

Abacus

B.

Calculator

C.

Pascaline

D.

Computer

Answer: Option A

Explanation:

Abacus was used to doing arithmetic calculations around 2500 years ago. Pascaline was the pascal’s calculator by Blaise Pascal invented for doing laborious calculations.