Question

What are the first four terms of the sequence shown below?

an = 2^n
A.
1, 2, 4, 8
B.
2, 4, 6, 8
C.
2, 4, 8, 16
D.
1, 8, 27, 256

Answer 1

$a_n=2^n\\\\a_1=2^1=2\\\\a_2=2^2=4\\\\a_3=2^3=8\\\\a_4=2^4=16\\\\Answer:\ C.\ \{2,\ 4,\ 8,\ 16\}$