|Test Name||:||9th Class Computer Test 05|
|Total Time||:||30 Minutes|
What is the Number System, and where we use it and why. You had read very deep about it in the Computer Science subject of 9th Class and here you should appear in the Online Test about this chapter and check your preparation for your examination. A number is a mathematical object used to count, label, and measure. There are several number systems that are important to computer science. Binary, hexadecimal, and octal refer to different number systems.