Pearson Edexcel International GCSE (9–1) · MATHEMATICS A · Unit
Unit 6
104 practice questions
Topics covered
Practice questions
41–50 of 104
Question 41
2 marks · Easy
Answer and see the solution →Complete the table showing the first four terms for the sequence: Start at 20, subtract 4 each time.
Sequence Table Term position (n) 1 2 3 4 Term 20 Question 42
2 marks · Easy
Answer and see the solution →The sequence 9, 12, 15, 18, ... is arithmetic. How many terms are there in the sequence up to and including 60?
Question 43
2 marks · Normal
Answer and see the solution →Write down the next three terms of the sequence:
Question 44
2 marks · Normal
Answer and see the solution →The nth term of a sequence is given by the formula:
Work out the value of the 25th term.
Question 45
3 marks · Normal
Answer and see the solution →A sequence is defined by the rule: "Start at 8, subtract 3 to get each new term." Complete the table for the first six terms.
Term position (n) 1 2 3 4 5 6 Term value 8 Question 46
4 marks · Normal
Answer and see the solution →The 4th term of an arithmetic sequence is 15 and the common difference is 6.
(a)[2 marks]Find the first term of the sequence.
(b)[2 marks]Calculate the 10th term of the sequence.
Question 47
3 marks · Normal
Answer and see the solution →Find the sum of the first 25 terms of the arithmetic sequence: 7, 12, 17, 22, ...
Question 48
2 marks · Normal
Answer and see the solution →Explain why the sequence 1, 2, 4, 7, 11, ... is not an arithmetic sequence.
Question 49
2 marks · Normal
Answer and see the solution →Given the sequence 4, 9, 16, 25, 36, ..., write a formula for the nth term.
Question 50
2 marks · Normal
Answer and check →In the sequence 6, 12, 18, 24, ..., what is the common difference? Write the answer.