Răspuns :
ratia este specificata in enunt, ratia r=3 primii cinci termeni sunt
a1=a2-r=7-3=4, a3=a2+r=7+3=10, a4=a3+r=10+3=13, a5=a4+r=13+3=16
4, 7, 10, 13, 16
ratia este specificata in enunt, ratia r=3 primii cinci termeni sunt
a1=a2-r=7-3=4, a3=a2+r=7+3=10, a4=a3+r=10+3=13, a5=a4+r=13+3=16
4, 7, 10, 13, 16