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Exam-Style Questions.

Problems adapted from questions set for previous Mathematics exams.

1.

GCSE Higher

The first five terms of an arithmetic sequence are:

$$-20, -17, -14, -11, -8$$

Find an expression for the \(n^{th}\) term of the sequence.


2.

GCSE Higher

(a) Find the \(n\)th term of the sequence 7, 13, 19, 25,...

(b) In a sequence of four numbers, the difference between each number is 9.
The sum of the four numbers is 2.
What are the numbers in the sequence?
You must show all your working.


3.

IB Standard

The first three and last terms of an arithmetic sequence are \(7,13,19,...,1357\)

(a) Find the common difference.

(b) Find the number of terms in the sequence.

(c) What is the sum of the sequence.


4.

IB Standard

An arithmetic sequence is given by 6, 13, 20, …

(a) Write down the value of the common difference, d.

(b) Find \(u_{100}\);

(c) Find \(S_{100}\);

(d) Given that \(u_n=1434\) , find the value of n.


5.

IB Standard

In an arithmetic sequence, the fifth term is 44 and the ninth term is 80.

(a) Find the common difference.

(b) Find the first term.

(c) Find the sum of the first 50 terms of the sequence.


6.

IB Applications and Interpretation

A celebrity football match is planned to take place in a large stadium.

Football Stadium

The most expensive tickets are in the first row. The ticket price for each row forms an arithmetic sequence. Prices for the first four rows are shown in the following table.

Row number: 1 2 3 4
Price per seat £50 £48.50 £47 £45.50

(a) Write down the value of the common difference, \(d\).

(b) Calculate the price of a ticket in the 19th row.

(c) Find the total cost of buying 5 tickets in each of the first 10 rows.


7.

IB Studies

A Grecian amphitheatre was built in the form of a horseshoe and has 22 rows.

The number of seats in each row increase by a fixed amount, \(d\), compared to the number of seats in the previous row. The number of seats in the fifth row, \(u_5\), is 58, and the number of seats in the ninth row, \(u_{9}\), is 86. \(u_1\) represents the number of seats in the first row.

(a) Write an equation for \(u_5\) in terms of \(d\) and \(u_1\).

(b) Write an equation for \(u_{9}\) in terms of \(d\) and \(u_1\).

(c) Write down the value of \(d\);

(d) Write down the value of \(u_1\).

(e) Find the total number of seats in the amphitheatre.

Some time later, a second level was added to increase the amphitheatre’s capacity by another 2590 seats. Each row has five more seats than the previous row. The first row on this level has 82 seats.

(f) Find the number of rows on the second level of the amphitheatre.


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The exam-style questions appearing on this site are based on those set in previous examinations (or sample assessment papers for future examinations) by the major examination boards. The wording, diagrams and figures used in these questions have been changed from the originals so that students can have fresh, relevant problem solving practice even if they have previously worked through the related exam paper.

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