Geometric Sequence

Find the common ratio of the geometric sequence 2, 10, 50,...

• 2

• 10

• 5

• 1/5

Which of the following is a geometric sequence?

• 1, 11, 21, 31

• 1, 2, 4, 16, 32

• 1, -2, 4, -8, 16

• 1, 2, 3, 4, 5, 6

What is the value of the fifth term of the geometric sequence 2, 6, 18,....?

• 161

• 162

• 163

• 164

The fifth term of a geometric sequence is 2 and the second term is 54. What is the common ratio of the sequence?

• 3

• 5/3

• 2/3

• 1/3

State whether each of the following sequences is geometric or not.

• 5, 20, 80, 320

• 7√2, 5√2, 3√2, √2

• 5, -10, 20, -40

• 10/3, 10/6, 10/9, 10/15

In geometric sequence each item is found by ____ the previous term by a constant.

A ____ can also have a smaller and smaller values.

Find the missing term in ___, ___, 32, 64, 128,....

It is an ordered set of numbers that progresses by multiplying or dividing each term by a common ratio. What am I?

What is missing in the geometric sequence formula? α_{n =} α₁ (r)