Answer:
4.5 and 5.5
Explanation:
there is a common difference between consecutive terms in the sequence, that is
1.5 - 0.5 = 2.5 - 1.5 = 1
thus to obtain the next term in the sequence add 1 to the preceding term
a₄ = a₃ + 1 = 2.5 + 1 = 3.5
a₅ = a₄ + 1 = 3.5 + 1 = 4.5
a₆ = a₅ + 1 = 4.5 + 1 = 5.5
the 5th and 6th terms are 4.5 and 5.5 respectively