Sequences (AQA GCSE Further Maths)

Exam Questions

48 mins13 questions
1
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2 marks

The nth term of a sequence is    fraction numerator 3 n squared minus 1 over denominator n squared plus 1 end fraction

Work out the sum of the first three terms.

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2
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3 marks

The first four terms of a quadratic sequence are

-3      3      13      27

Work out an expression for the nth term.

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3a
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2 marks

The nth term of a sequence is   fraction numerator 2 n plus 47 over denominator n plus 1 end fraction.

A term of the sequence has a value of 5.

Work out the value of n.

3b
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1 mark

Write down the limiting value of the sequence as n rightwards arrow infinity.

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4a
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2 marks

The nth term of a sequence is  fraction numerator 1420 minus 5 n over denominator 1420 plus 5 n end fraction.

Work out the position of the term that has the value zero.

4b
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1 mark

Write down the limiting value of the sequence as n space rightwards arrow space infinity.

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5a
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2 marks

The nth term of a sequence is  fraction numerator 3 n over denominator 5 n plus 12 end fraction.

Work out the position of the term that has a value of  1 half.

5b
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1 mark

Write down the limiting value of   fraction numerator 3 n over denominator 5 n plus 12 end fraction as n rightwards arrow infinity.

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1
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3 marks

The first four terms of a quadratic sequence are

0 space space space space space space 1 space space space space space space 0 space space space space space space minus 3

Work out an expression for the nth term.

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2
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2 marks

A linear sequence has first term    7 plus 12 square root of 5.

The term-to-term rule is

addspace space space space space 9 minus 2 square root of 5

One term of the sequence is an integer.

Work out the value of this integer.

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3
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4 marks

For sequence A,  n th term = fraction numerator n over denominator 14 n space plus space 30 end fraction.

For sequence B,  n th term = 2 over n.

The k th term of sequence A equals the k th term of sequence B.

Work out the value of k. You must show your working.

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4
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3 marks

A quadratic sequence starts

9 comma space space space space 14 comma space space space space 23 comma space space space space space 36 comma space space space space....

Work out an expression for the nth term.

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5
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5 marks

The nth term of a sequence is fraction numerator 2 n plus 1 over denominator n plus 4 end fraction.

Work out an expression for the difference between the open parentheses p plus 5 close parenthesesth term and the pth term.

Give your answer as a single simplified fraction.

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1a
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2 marks

Here are the first four terms of linear sequences X and Y and quadratic sequence Z.

Sequence X

7

9

11

13

...

Sequence Y 

2

5

8

11

...

Sequence Z

14

45

88

143

...

 Work out the nth term of sequence X.

1b
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3 marks

The nth term of sequence Y is 3 n minus 1

Using your answer to part (a), or otherwise, work out the nth term of sequence Z. Give your answer in the form a n squared plus b n plus c where a comma space b and c are integers.

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2
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6 marks

The nth term of a sequence is fraction numerator a n squared plus 5 over denominator b n squared plus a end fraction where a and b are integers.

The second term in the sequence is 1 third.

The limiting value of the sequence as n rightwards arrow infinity is 1 fourth.

Find the values of a and b.

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3
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6 marks

The sequence

100 comma space space space space space 36 comma space space space space space 4 comma space space space space space 4 comma space space space space space 36 comma space space space space space....

has an nth term formula of p open parentheses 2 n plus q close parentheses squared where p and q are integers.

Find the values of p and q.

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