Posted by Nicki on Thursday, October 28, 2010 at 7:33pm.
Which of the following is NOT a real number? (Please explain why!)
(1) 1 (I already ruled out this answers because integers can be real numbers)
(2) square root of 3
(3)square root of 3
(4)0.101001000100001...

Math  MathMate, Thursday, October 28, 2010 at 10:18pm
Real numbers include rational, irrational, integers, and natural numbers. Real numbers form a subset of complex numbers. So when a number is not real, it is usually complex.
Can you spot a complex number from the list?
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