There are different things like p,q,r,s,t,u,v. We can take p and q together. If r
and s are taken together then t must has to be taken. u and v can be taken
together.v can be taken with p or s. every thing can be taken together except.

• T is single
• 9 years agoHelpfull: Yes(2) No(0)
• except
  T
  
• 9 years agoHelpfull: Yes(1) No(1)
• p&q
  if r&s are taken together t must be taken.
  uvp or uvs.
  so the single letter left is T
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• except
  t
  
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• USING logical digital gate ans is T
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• q is not taken together with every thing
• 9 years agoHelpfull: Yes(0) No(1)