Question

Which recursive formula can be used to represent the sequence 2,4,6,8,10.... ?abcor d

Answer 1

Looking at the sequence 2, 4, 6, 8, 10, ..., we can see that the first element is 2 and each subsequent element is 2 units more than the previous element.

Knowing that, we can write the equations:

`\begin{gathered} a_1=2 \\ a_n=a_(n-1)+2 \end{gathered}`

Therefore the correct option is A.