1.905 rounded to the nearest tenth is 1.9
I believe there is no such AP...
Recursively, this sequence is supposed to be given by

so that




has to be an integer, which means there are 4 possible cases.
Case 1:
and
. But

Case 2:
and
. But

Case 3:
and
. But

Case 4:
and
. But

128, because it’s actually 256 but 256/ 2= 128
Use excel to draw the graph and add the trend, formula