Quiz on Sequences

1. These are the first four terms in a sequence.  21, 17, 13, 9, ….

(a) Write down the next number in this sequence.

1. These are the first four terms in a sequence.  21, 17, 13, 9, ….

(b) Write down the rule for continuing the sequence.

2. 2. Write down the next two terms in the following sequence.

73, 66, 59, 52,     ...................., .................... [Type the number only]

3. These are the first four terms of a sequence. 1, 23, 45, 67, …

2. (a) Write down the next two terms.      ...................., ....................

[Type the numbers only]

3. These are the first four terms of a sequence. 1, 23, 45, 67, …

2. (b) Find the nth term.     ......................................

[Type your answers without spaces]

4. 4. These are the first four terms of a sequence. 15, 7, −1, −9, …

Find the nth term of this sequence.  ....................................

[Type your answers without spaces]

4. 5. The nth term of a sequence is n² + 3n.

      Find the first three terms of this sequence.

   ............. , ............. , .............

[Type your answers only]

6. These are the first four terms of a sequence. 11, 15, 19, 23, ….

 

Is 129 a term in this sequence?  Show how you decide.

 

.................because.............................................................................

 

[Type your answers on the boxes]

 

Yes or No, n=......

5. 7. The nth term of a sequence is 3n² + 2n – 4.

    Find the difference between the 3^rd term and the 5^th term of this sequence.

 

...................................................