Maths — Foundation, Unit 2

Sequences (Edexcel IGCSE Maths): Exam Questions

2 questions · 9 marks · ≈ 9 min

Guided practice

15 marksmedium

2 marks

(a)

Here are the first five terms of a number sequence.

7 11 15 19 23

Find an expression, in terms of $n$ , for the $n$ th term of this sequence.

Your answer

2 marks

(b)

The $n$ th term of a different number sequence is given by $80--2n$

Write down the first 3 terms of this sequence

Your answer

1 mark

(c)

Yuen says there are no numbers that are in both of the sequences. Yuen is correct.

Explain why.

Your answer

How did you do?/ 5

24 markseasy

1 mark

(a)

Here is a sequence of patterns made from sticks.

Three patterns with diagonal lines in squares: Pattern 1 has one square, Pattern 2 has two, and Pattern 3 has three squares.

In the space below, draw Pattern number 4.

Your answer

1 mark

(b)

Complete the table.

Pattern number	1	2	3	4	5
Number of sticks	5	9	13

Your answer

1 mark

(c)

Work out the number of sticks in Pattern number 10

Your answer

1 mark

(d)

Connor says that in Pattern number 25 there are 102 sticks.

Explain why Connor is wrong.

Your answer

How did you do?/ 4

Pattern number

Number of sticks