if x+y+z =1. then xy+yz+zx is
a)1/2 c)=1/2

• 1/4
  
  1/2+1/2+0=1
  xy=1/2*1/2=1/4
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• Answer is
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• if x+y+z =1
  Then Assume x = y = z = 1/3
  then xy+yz+zx = 3/9 = 1/3
  
  Answer will be
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• Answer is less than 1/2
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