Arithmetic and geometric

Question

1. What is the arithmetic sequence between 13/2 and 13/4
2. What is the geometric seguence between 11/2 and 6

Answer 1

arithmetic,,,,subtraction of successive terms is same value

geometric,,,,,division of successive terms same value

arithmetic term between 13/2 and 13/4

(13/2)-x=x-13/4

x=39/8

geometric term between 6 and 11/2

6/x=x/(11/2)

x=√33