Sequences and Means Challenge

What is the common difference in the sequence 3, 7, 11, 15?

• 8

• 6

• 2

• 4

Identify if the sequence 2, 4, 8, 16 is arithmetic or geometric.

• neither

• geometric

• random

• arithmetic

Calculate the common ratio of the sequence 5, 15, 45, 135.

• 3

• 2

• 5

• 4

Find the arithmetic mean between 10 and 20.

• 25

• 15

• 12

• 18

Determine if the sequence 1, 1/2, 1/4, 1/8 is arithmetic or geometric.

• geometric

• arithmetic

• constant

• quadratic

What is the common difference in the sequence 12, 9, 6, 3?

• 3

• -6

• 0

• -3

Calculate the common ratio for the sequence 3, 9, 27, 81.

• 2

• 4

• 6

• 3

Find the arithmetic mean of the numbers 8 and 12.

• 14

• 10

• 11

• 9

Identify the type of sequence: 7, 14, 21, 28.

• Geometric sequence

• Harmonic sequence

• Fibonacci sequence

• Arithmetic sequence

What is the common difference in the sequence 100, 90, 80, 70?

• -5

• 0

• -10

• 10