term 1 = a = 28
term 2 = a r
term 3 = a r^2
term 8 = a r^7 = -7/32
28 r^7 = -7/32
r^7 = -1/(4*32)
r^7 = -1/2^7
r = -1/2
The 8th term of a g.p is -7/32 fine it's common ration if its first term is 28
2 answers
DAT NOT THE EXAMPLE GIVEN TO US THE FORMULAR IS DIFFERENT