Finding Values in Arithmetic and Geometric Series

Evaluate the geometric series described.

3+15+75+375+..., n=6

• 11,718

• 9,769

• 10,603

• -3/4

Evaluate the geometric series

1-2+4-8..., n=8

• 1/3

• -87

• -86

• -85

a₁=2, r=−2, Sn = 22

Determine the number of terms n in the series

• 6

• 8

• 7

• 5

−3, 6, −12, 24, ....

Find the common ratio

• 3

• 2

• -2

• 1/2

−4, −12, −36, −108, ...

Find the common ratio

• r=−2

• r=3

• r=−3

• r=2

4, 24, 144, 864, ...

Find the next 3 terms

• 1024, 4096, 16384

• 256, −1024, 4096

• 256, 1024, 4096

• 5184, 31104, 196624

1, −2, 4, −8, ... Find a₁₁

• −512

• 1024

• −1024

• 512

The next two terms of the sequence

4, 7, 10, 13 are ....

• 16 and 19

• 16 and 18

• 15 and 19

• 15 and 18

Which of the following is not an Arithmetic Progression?

• 1, 4, 7, 10, .....

• 3, 7, 12, 16, ......

• -5, -2, 1, 4, .....

• 11, 14, 17, 20, .....

The first four terms of an Arithmetic Progression whose first term is -2 and the common difference is -2 is _____

• -2, 0, 2, 4

• -2, -4, -6, -8

• -2, 4, -8, 16

• -2, -4, -9, -16