The number of the correct reaction(s) among the following is _______.

A compound $$(x)$$ with molar mass $$108 \mathrm{~g} \mathrm{~mol}^{-1}$$ undergoes acetylation to give product with molar mass $$192 \mathrm{~g} \mathrm{~mol}^{-1}$$. The number of amino groups in the compound $$(x)$$ is ___________.

The compound formed by the reaction of ethanal with semicarbazide contains _________ number of nitrogen atoms.