TN TET 2013 Paper 2 Math and Science Paper

Question : 117 of 150

Marks: +1, -0

Which is not correct?

$−\;{8}/{9} × (−\;{4}/{7}) = −\;{4}/{7} × (−\;{8}/{9})$
$−\;{1}/{2} + [\;{3}/{7} + (−\;{4}/{3}) ] = [−\;{1}/{2} + \;{3}/{7}] + [−\;{4}/{3}]$
$−\;{1}/{2} ÷ [\;{3}/{7} ÷ (−\;{4}/{3}) ] = [−\;{1}/{2} ÷ \;{3}/{7}] ÷ (−\;{4}/{3})$
$−\;{1}/{2} × [\;{3}/{7} × (−\;{4}/{3}) ] = [−\;{1}/{2} × \;{3}/{7}] × (−\;{4}/{3})$

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