decimal octal and binary Quiz Practice Quiz…

11 — 1*2^3 + 0*2^2 + 1*2^1 + 1*2^0 = 8 + 0 + 2 + 1 = 11

1000 — 8 = 1*2^3 + 0*2^2 + 0*2^1 + 0*2^0 = 1000

12 — 10 = 1*8^1 + 2*8^0 = 12 (octal)

19 — 2*8^1 + 3*8^0 = 16 + 3 = 19

Binary — Binary uses base-2 and therefore only digits 0 and 1.

Question 1 of 5

What is the decimal equivalent of the binary number 1011?

1*2^3 + 0*2^2 + 1*2^1 + 1*2^0 = 8 + 0 + 2 + 1 = 11

Question 2 of 5

8 = 1*2^3 + 0*2^2 + 0*2^1 + 0*2^0 = 1000

Question 3 of 5

10 = 1*8^1 + 2*8^0 = 12 (octal)

Question 4 of 5

2*8^1 + 3*8^0 = 16 + 3 = 19

Question 5 of 5

Binary uses base-2 and therefore only digits 0 and 1.