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- Logical Reasoning
- Number Series
- Section 1
Directions :
Number series questions measure your ability to reason without
words. To answer these questions, you must determine
the pattern of the numbers in each series before you will
be able to choose which number comes next. In each series, look for the degree and
direction of change between the numbers. In other
words, do the numbers increase or decrease, and by
how much?
1.
Look at this series: 31, 29, 24, 22, 17, . . . What number should come next?
- A.15
- C.13
- B.14
- D.12
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| This is a simple alternating subtraction series, which subtracts 2, then 5. |
2.
Look at this series: 14, 28, 20, 40, 32, 64, . . . What number should come next?
- A.52
- C.96
- B.56
- D.128
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| This is an alternating multiplication and subtracting series. First, multiply by 2 and then subtract 8. |
3.
Look at this series: 21, 9, 21, 11, 21, 13, . . . What number should come next?
- A.14
- C.21
- B.15
- D.23
- Answer & Explanation
- Report
Answer : [C]
Explanation :
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. |
4.
Look at this series: 80, 10, 70, 15, 60, . . . What number should come next?
- A.20
- C.30
- B.25
- D.50
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
|
This is an alternating addition and subtraction series: In the first pattern, 10 is subtracted from each number to arrive at the next. In the second, 5 is added to each number to arrive at the next. |
5.
Look at this series: 58, 52, 46, 40, 34, . . . What number should come next?
- A.26
- C.30
- B.28
- D.32
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
|
This is a simple subtraction series: Each number is 6 less than the previous number. |
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