Please help me to answer these two board exam problems. Thank you so much

1. Find the limit of z^2/(z^4+z+3) as z approaches e to the (pi i/2)

a. 3/16

b. (-4+i)/17

c. (8i-76)/365

d. (5i+6j)287

Please help me how to solve this problem. Is there any way to do via calculator technique?

if theres no technique what is the solution and answer for this thank you

2.) Find the 7th and the 8th term of 1, 3, 6, 10.

a. 18,27

b. 25,33

c. 21,28

d. 28,36

The answer for this is letter D. how to answer this problem. Is there any way too to solve this in calculator? thanks but id like to know its solution too.