Below are five number sequences.
3, 4, 6, 10, 18,...
2
1,
4
25
24 8 16 32
5'6' 9'12 15
+
3, 15, 75, 375, 1875, ...
5,-11, -27,-43, -59, ...
Decide whether each sequence is an arithmetic sequence (A), a geometric
sequence (G), or neither (N). Which of the following strings of letters correctly
describes the types of the five sequences above (in order of top to bottom)?
A. NGNGA
B. NGGGA
C. AGNGG
D. AGGGA
E. NNNGA