Convert the base-ten number to a numeral in the indicated base.

Question

19)

15 to base two

19)

______

A)

11110two

B)

111two

C)

1110two

D)

1111two

Answer 1

19 = 16 + 2 + 1
= 2^4 + 0(2^3) + 0(2^2) + 2^1 + 2^0
= 10011₂

aRgghh!, just realized that 19 was the question #
but let's leave it as another example

15 = 8 + 4 + 2 + 1
= 2^3 + 2^2 + 2^1 + 1
= 1111₂