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A student was asked to prove a statement by induction. He proved
i) P(5) is true and
ii) truth of P(n)rightwards double arrow truth of P(n+1), n element of N.
On the basis of this, he could conclude that P(n) is true

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  1. nothing can be said    
  2. for all n greater or equal than 5    
  3. for all n    
  4. for no n    

    Answer:The correct answer is: for all n greater or equal than 5

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