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Question

text  If  end text a with not stretchy bar on top equals ı with not stretchy bar on top plus 2 ȷ with not stretchy bar on top plus 3 k with not stretchy bar on top comma b with not stretchy bar on top equals negative ı with not stretchy bar on top plus 2 ȷ with not stretchy bar on top plus k with not stretchy bar on top comma c with not stretchy bar on top equals 3 ı with not stretchy bar on top plus ȷ with not stretchy bar on top text  and  end text a with not stretchy bar on top plus t b with not stretchy bar on top is perpendicular to stack c with ‾ on top, then t equals

  1. 5    
  2. 4    
  3. 3    
  4. 2    

The correct answer is: 5

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