in Quantitative Aptitude retagged by
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if $a^2+b^2+c^2=1$ then $ab+bc+ac$ lies in the interval

  1. $[1,2/3]$
  2. $[-1/2,1]$
  3. $[-1,1/2]$
  4. $[2,-4]$
in Quantitative Aptitude retagged by
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