Select the first five terms in the arithmetic sequence An =2n starting with n=1

Question

answer choices are:

1. {1/2, 1/4, 1/6,1/8,1/10}

2. { 1,2,3,4,5}

3. { 3,4,5,6,7}

4. {2,4,6,8,10}

Answer 1

in the arithmetic sequence An =2n, each term is twice the size of its index.

So, A1 = 2*1 = 2

A2 = 2*2 = 4

A3 = 2*3 = 6

etc.

So the sequence goes, 2,4,6,8,10, ...

Answer: option 4. {2,4,6,8,10}

Answer 2

1,2,3,4,5,

Answer 3

2,426,8,10