1- Find the sum of the first five terms of the arithmetic series: an = 2n + 2

a) 12 b) 16 c) 32 d) 40

2- Find lim5n^4+3/n^4

a) there is no limit b) 1/5 c) 3 d) 5

3- Find lim5n^2 - 15

a) there is no limit b) 1/3 c) 3 d) 5

4-