🔢 Math & Numbers Trivia
Quiz Set 17 — Binary & Bases
Answer all 10 questions. Click an option to see if you got it right!
Question 1 of 10
What base does binary use?
Binary is base-2, using only digits 0 and 1.
Question 2 of 10
What is 1010 in binary equal to in decimal?
1010₂ = 8+0+2+0 = 10.
Question 3 of 10
What base system do we normally use?
Humans normally use the decimal (base-10) system.
Question 4 of 10
What is hexadecimal?
Hexadecimal uses 16 symbols: 0-9 and A-F.
Question 5 of 10
In hexadecimal, what does F represent?
F = 15 in hexadecimal (A=10, B=11, ... F=15).
Question 6 of 10
What is 11111111 in binary equal to in decimal?
11111111₂ = 128+64+32+16+8+4+2+1 = 255.
Question 7 of 10
What base does the octal system use?
Octal is base-8, using digits 0-7.
Question 8 of 10
How many bits in a byte?
One byte = 8 bits.
Question 9 of 10
What is 5 in binary?
5 = 4+1 = 101 in binary.
Question 10 of 10
What color code format uses hexadecimal?
Web colors use hex codes like #FF0000 for red.