the third term of gp is 360 and the sixth term is 1215 find the common ratio

Answer 1

Tn = a r^(n-1)
T3 = a r^2 = 360
T6 = a r^5 = 1215
so
r^5/r^2 = 1215/360 = 3.375
r = 3.375^(1/3) = 1.5