Does NH3/NH4+ represents a conjugate acid/base pair ?

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Explanation: 

The conjugate acid base pair is a set of 2 molecules/ions that have identical molecular formulas,except that they have one more H+ than the other and NH3 - NH4+ is exactly the pair that is differ by a H+ ion so it is a conjugate acid base pair.

Answer: 

yes they are conjugate acid base pairĀ  as they are differ by just a H+ ion .