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Math for teachers

posted by on .

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

19)

15 to base two

19)

______

A)

11110two

B)

111two

C)

1110two

D)

1111two

  • Math for teachers - ,

    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

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