IAAT - Iowa Algebra Aptitude Number Patterns and Sequences Questions and Answers

Question 1

What is the next number in the following geometric sequence: 80, 40, 20, 10, ___?

Accepted Answer

5

Answer

2

Answer

0

Answer

8

Question 2

A concert hall has 20 seats in the first row. Each subsequent row has 3 more seats than the row in front of it. How many seats are in the 8th row?

Accepted Answer

41

Answer

44

Answer

38

Answer

24

Question 3

Consider a visual pattern made of square tiles. Figure 1 has 1 tile, Figure 2 has 4 tiles, and Figure 3 has 9 tiles, arranged in squares. If this pattern continues, how many tiles will be in Figure 6?

Accepted Answer

36

Answer

12

Answer

25

Answer

18

Question 4

Which of the following is the next number in the sequence: 2, 3, 5, 8, 12, ___?

Accepted Answer

17

Answer

16

Answer

15

Answer

18

Question 5

The table below shows a relationship between an input number, 'n', and an output number. Which rule describes this relationship?

| Input (n) | Output |
|---|---|
| 2 | 7 |
| 3 | 10 |
| 4 | 13 |
| 5 | 16 |

Accepted Answer

3n + 1

Answer

n + 5

Answer

2n + 3

Answer

4n - 1

Question 6

Find the missing number in the following arithmetic sequence: 4, 10, ___, 22, 28.

Accepted Answer

16

Answer

15

Answer

17

Answer

18