1. | Look at this series: 2, 1, (1/2), (1/4), ... What number should come next? |
Answer: Option B Explanation: This is a simple division series; each number is one-half of the previous number. In other terms to say, the number is divided by 2 successively to get the next result. 4/2 = 2 2/2 = 1 1/2 = 1/2 (1/2)/1 = 1/4 (1/4)/2 = 1/8 (1/8)/2 = 1/16 and so on.
|
2. | Look at this series: 7, 10, 8, 11, 9, 12, ... What number should come next? |
Answer: Option B Explanation: This is a simple alternating addition and subtraction series. In the first pattern, 3 is added; in the second, 2 is subtracted.
|
3. | Look at this series: 36, 34, 30, 28, 24, ... What number should come next? |
Answer: Option B Explanation: This is an alternating number subtraction series. First, 2 is subtracted, then 4, then 2, and so on.
|
4. | Look at this series: 22, 21, 23, 22, 24, 23, ... What number should come next? |
Answer: Option C Explanation: In this simple alternating subtraction and addition series; 1 is subtracted, then 2 is added, and so on. |
5. | Look at this series: 53, 53, 40, 40, 27, 27, ... What number should come next? |
Answer: Option B Explanation: In this series, each number is repeated, then 13 is subtracted to arrive at the next number. |
6. | Look at this series: 21, 9, 21, 11, 21, 13, 21, ... What number should come next? |
Answer: Option B Explanation: In this alternating repetition series, the random number 21 is interpolated every other number into an otherwise simple addition series that increases by 2, beginning with the number 9.
|
7. | Look at this series: 58, 52, 46, 40, 34, ... What number should come next? |
Answer: Option B Explanation: This is a simple subtraction series. Each number is 6 less than the previous number.
|
8. | Look at this series: 3, 4, 7, 8, 11, 12, ... What number should come next? |
Answer: Option D Explanation: This alternating addition series begins with 3; then 1 is added to give 4; then 3 is added to give 7; then 1 is added, and so on.
|
9. | Look at this series: 8, 22, 8, 28, 8, ... What number should come next? |
Answer: Option D Explanation: This is a simple addition series with a random number, 8, interpolated as every other number. In the series, 6 is added to each number except 8, to arrive at the next number.
|
10. | Look at this series: 31, 29, 24, 22, 17, ... What number should come next? |
Answer: Option A Explanation: This is a simple alternating subtraction series, which subtracts 2, then 5. |
11. | Look at this series: 1.5, 2.3, 3.1, 3.9, ... What number should come next? |
Answer: Option C Explanation: In this simple addition series, each number increases by 0.8.
|
12. | Look at this series: 14, 28, 20, 40, 32, 64, ... What number should come next? |
Answer: Option B Explanation: This is an alternating multiplication and subtracting series: First, multiply by 2 and then subtract 8.
|
13. | Look at this series: 2, 4, 6, 8, 10, ... What number should come next? |
Answer: Option B Explanation: This is a simple addition series. Each number increases by 2.
|
14. | Look at this series: 201, 202, 204, 207, ... What number should come next? |
Answer: Option D Explanation: In this addition series, 1 is added to the first number; 2 is added to the second number; 3 is added to the third number; 4 is added to the fourth number; and go on.
|
15. | Look at this series: 544, 509, 474, 439, ... What number should come next? |
Answer: Option A Explanation: This is a simple subtraction series. Each number is 35 less than the previous number. |
|