Introduction to Sequences and Series

F.1

3.3 Sequences

Watch the Video and Answer the Questions

Multiple Choice

For the sequence 9, 13, 17, 21, 25, ..., the 3rd term is

• 13

• 17

• 21

• 25

Multiple Choice

The general term of a sequence is  $$\frac{1}{n+1}$$  . The 4th term is

• $$\frac{1}{2}$$  .

• $$\frac{1}{3}$$  .

• $$\frac{1}{4}$$  .

• 
  

  $$\frac{1}{5}$$  .
  

Multiple Choice

The general term of the sequence 4, 8, 12, 16, ... is

• 
  

  $$2n+2$$
  

• $$6n-2$$

• $$4n+4$$

• $$4n$$

Multiple Choice

The general term  $$a_n$$  of a sequence is  $$5-2n$$  . Find  $$a_3$$  .

• -1

• 1

• 3

• 5

Multiple Choice

For the sequence 7, -3, -13, -23, ...,  $$a_2+a_3=$$  

• 4

• -16

• -36

• -10

Multiple Choice

The general term $$a_n$$  of a sequence is  $$n^2$$  . The 5th term and the 10th term are

• 10 and 20.

• 10 and 100.

• 25 and 20.

• 25 and 100.

Watch the Video and Answer the Questions

Multiple Choice

In the sequence 5, 11, 17, 23, x, y, ..., what is the value of y?

• 29

• 30

• 35

• 36

Multiple Choice

For the sequence 5, 1, -3, ..., find the 4th term and the 5th term.

• -7 and -11

• -5 and -7.

• -1 and -5.

• -1 and -11.

Multiple Choice

Consider the sequence 3, 4, 7, 11, 18, 29, ... Find $$a_7$$  .

• 35

• 37

• 40

• 47

Multiple Choice

For the sequence 4, 12, 36, ... , the sum of the 2nd term and the 4th term is

• 48.

• 72.

• 108.

• 120.