Answer:
211, 311, 411
Step-by-step explanation:
The common difference between consecutive terms in an arithmetic sequence is
d = a₂ - a₁ = 111 - 11 = 100
Thus add d to a₂ to find a₃ and so on..
a₃ = 111 + 100 = 211
a₄ = 211 + 100 = 311
a₅ = 311 + 100 = 411
