The sum of the first 15 terms of a geometric sequence with 7 as the first term and a common ratio of -3 is ___.A.) 50,221,171B.) 25,110,589C.) 100,442,356D.) 33,480,783
The sum of the first 15 terms of a geometric sequence with 7 as the first term and a common ratio of -3 is ___.
A、) 50,221,171
B、) 25,110,589
C、) 100,442,356
D、) 33,480,783
发布时间:2025-05-14 02:31:39