Arithmetic or Geometric

2, 5, 8, 11,...

• Arithmetic

• Geometric

• Neither

−2, −10, −50, −250, ...

• Arithmetic

• Geometric

• Neither

−9, −109, −209, −309, ...

• Arithmetic

• Geometric

• Neither

1/2 , 0, −1/2 , ...

• Arithmetic

• Geometric

• Neither

• Arithmetic

• Geometric

Answer explanation

Percentages are almost always Geometric.

• 315

• 330

• 345

• 360

−1, −5, −25, −125, ...

• Arithmetic

• Geometric

• Neither

−3, −1, −1/3 , −1/9, ...

• Arithmetic

• Geometric

• Neither

4, 12, 36, 108, ...

• Arithmetic

• Geometric

• Neither

For each sequence, state if it is arithmetic, geometric, or neither.

29,49,69,89,109.....

• Arithmetic

• Geometric

• Neither