A term an is called a "cusp" of a sequence if a_n is an integer but a_{n+1} is not an integer. If a_5 is a cusp of the sequence a1,a2,..., an,... in which a1=k and an=−2(a_{n−1})/3 for all n>1, then k could be equal to:
A. 3
B. 16
C. 108
D. 162
E. 243
The OA is D.
This is a hard question for me. I would be thankful if an expert helps me here.
A. 3
B. 16
C. 108
D. 162
E. 243
The OA is D.
This is a hard question for me. I would be thankful if an expert helps me here.
