Arithmetic and geometric progressions

Question 1 of 10

Find the sum of the first 23 terms of the AP 12, 8, 4, …

Question 2 of 10

Find the 8th term of the GP 2, 6, 18, …

Question 3 of 10

The 19th term of the AP with first term 8 and common difference 4 is ___.

Question 4 of 10

Find the 24th term of the AP 9, 12, 15, …

Question 5 of 10

A constant sequence such as 4, 4, 4 is an AP with d = 0.

Question 6 of 10

The first term of a GP is 64 and the common ratio is 0.5. (a) Write down the first four terms. (b) Find the sum of the first four terms. (c) Find the sum to infinity.

Question 7 of 10

The nth term of a GP is

Question 8 of 10

1, 2, 4, 8 is an AP.

Question 9 of 10

Find the 8th term of the GP 2, 4, 8, …

Question 10 of 10

The 24th term of the AP with first term 3 and common difference 2 is ___.