Who invented the concept of  $0$  ?

• Aryabhata

• Ada Lovelace

• Charles Babbage

• I don't know!

What Number systems do the computers use?

• Binary

• Hexa-decimal

• Decimal

• Octal

Sasha got a 10% rise in their salary. Their salary is 15,000. 

Will the formula be  $15,000\cdot\frac{10}{100}$  ?

In binary multiplication  $1\cdot1=$  

• 0

• 1

• 2

To convert a decimal number into a binary number, divide it by ________

The base of _________________ Number system is 10.

Octal Number system have ________ digits

• 7

• 8

• 9

• 10000

The binary addition (1 + 1 + 1) gives

• 1121

• 111

• 100

• 11

The digital system usually operate on..........system

• decimal

• octal

• decimal

• binary

What is the intersection of a column and a row on a worksheet called ?

• Column

• Value

• Address

• Cell