Arithmetic and Geometric Revision

Which is an arithmetic sequence:

• 2, 5, 8, 11, 14, ... ...

• 3, 5, 9, 17, 33, . . .

• 1, 3, 20, 90, …

• 23, 22, 21, 19, 14 …

What is the first term of the following arithmetic sequence

t₁=3, t_n+1=t_n-4:

• 1

• 2

• 3

• 4

What is the second term of the following arithmetic sequence:

t₁=3, t_n+1=t_n+2

• 2

• 3

• 4

• 5

What is the second term of the following arithmetic sequence

t₁=10, t_n+1=t_n-3

• 10

• 8

• 7

• 5

Which of the following is NOT an arithmetic sequence?

• 4, -5, -14, -23, -32, …

• 13, 20, 27, 34, 41, …

• 21, 31, 41, 51, 61, …

• 1, 1, 2, 3, 5, 8, 13, …

Use your calculator to find the 5^th term of the following recurrence relation,

t₁=10, t_n+1=t_n-3

• 10

• 1

• -2

• -5

Which of the following sequences is generated by the following recurrence relation?

t₁=-5, t_n+1=t_n-6

• -5, -6, -7, -8, …

• -6, -1, 4, 9, …

• -5, -11, -17, -23, …

• -5, 1, 7, 13, …

Which is a geometric sequence:

• 2, 10, 50, 250, ...

• -2, -6, 18, 54, ...

• 1, 3, 20, 90. …

• 23, 22, 21, 20, …

What is the first term of the following geometric sequence

t₁=3, t_n+1=t_nx4

• 3

• 4

• 12

• 24

What is the second term of the following geometric sequence

t₁=3, t_n+1=t_nx2

• 2

• 3

• 6

• 12