Questions on Algebra: Unit Conversion answered by real tutors!

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Question 139318:
In the following, write the binary number in base 10.
1011^2 but binary not an exponent.
Choice 'A' 1810
Choice 'B' 1110
Choice 'C' 1410
Choice 'D' 1210
i dont know the answer:
In the following, write the binary number in base 10.
1011^2 but binary not an exponent.
Choice 'A' 1810
Choice 'B' 1110
Choice 'C' 1410
Choice 'D' 1210
i dont know the answer
Answer by scott8148(2759) About Me  (Show Source):
You can put this solution on YOUR website!
binary 1011 equals 1(2^3)+0(2^2)+1(2^1)+1(2^0) equals 8+0+2+1 equals 11

11^2 is 121

all the choices end with zero __ neglecting the zeroes, D seems correct