Question

(Help!!!) Match the sequence (term) with the correct type of sequence (definition).

1. 2, 4, 6, 8, …
2. 28, 24, 20, 16, …
3. 2, 4, 8, 16, …
4. 48, 24, 12, 6, …

A) Arithmetic, common difference is −4
B) Geometric, common ratio is 0.5
C) Arithmetic, common difference is 2
D) Geometric, common ratio is 2

Answer 1

Here are the answers:

1) C

2) A

3) D

4) B

Answer 2

A) Arithmetic, common difference is −4.
2. 28,24,20,16
24-28= -4
20-24= -4
16-20= -4
Common Difference- -4
And is an Arithmetic Sequence
B) Geometric, common ratio is 0.5
4. 48,24,12,6
24/48=0.5
12/24=0.5
6/12=0.5

C) Arithmetic, common difference is 2.
1. 2,4,6,8...
4-2=2
6-4=2
8-6=2
The pattern Continues, consecutive term differs by 2.. And is Arithmetic.

D) Geometric, common ratio is 2.
3. 2,4,8,16
4/2= 2
8/4= 2
16/8= 2