Manchester United's Henrikh Mkhitaryan was on target for Armenia, while Germany cruised and the Home Nations won.
Germany will look to continue their perfect start in the World Cup Qualifiers when they travel to Azerbaijan on Sunday, live on Sky Sports.
Italy and Germany fought out a goalless draw, while France also drew a blank with Ivory Coast in friendlies on Tuesday night.
Paul Pogba and Dimitri Payet scored as France beat Sweden 2-1 to go top of World Cup Qualifying European Group A.
From Argentina to Australia, read our World Cup qualifying update ahead of this week's internationals...
Scotland slumped to a 3-0 defeat away to Slovakia in their World Cup Group F Qualifier on Tuesday evening.