What are the first four terms of the sequence shown below an

What are the first four terms of the sequence shown below? a_n = 5n -1 -1, 4, 9, 14 4, 9, 14, 19 5, 6, 7, 8 6, 11, 16, 21

Solution

The first four terms will be a₁,a₂,a₃ and a₄

Therefore, substituting n= 1,2,3 and 4 we will get the values of thee first four terms

that is, 4,9,14,19

Therefore option B is correct.

Incase the sequence is starting from n=0, the first four terms will be corresponding to n=0,1,2,3 that is -1,4,9,14 In that case option A will be correct.