2 Binary Number System Quiz

What is the decimal equivalent of the binary number 10101?

• 21

• 19

• 25

• 23

What is the decimal equivalent of the binary number 11111?

• 31

• 29

• 33

• 27

In the binary system, what does the digit '0' represent?

• A card is face up

• A card is hidden

• A card is removed

• A card is flipped

In the binary system, what does the digit '1' represent?

• A card is hidden

• A card is face down

• A card is face up

• A card is removed

How would you convert the binary number 1001 to decimal?

• 9

• 7

• 11

• 13

What is the binary value of the following sequence of smiley and sad faces? 😊😊😢

• 110

• 101

• 011

• 100

Convert the following sequence of thumbs up and thumbs down into binary: 👍👎👍

• 101

• 110

• 011

• 100

What is the binary representation of the following sequence of plus and cross symbols? ++×+

• 1101

• 1011

• 1110

• 1001

What is the binary value of the following sequence of spades? ♠♠♠♠

• 1111

• 0000

• 1100

• 1010

What are the first 5 binary numbers?

• 1, 10, 11, 100, 101

• 1, 11, 111, 100, 110

• 1, 10, 11, 101, 111

• 1, 10, 100, 101, 110