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Exercise
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?
16.
Look at this series: 1.5, 2.3, 3.1, 3.9, . . . What number should come next?
  • A.
    4.2
  • C.
    4.7
  • B.
    4.4
  • D.
    5.1
  • Answer & Explanation
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Answer : [C]
Explanation :
In this simple addition series, each number increases by 0.8.
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17.
Look at this series: 36, 34, 30, 28, 24, . . . What number should come next?
  • A.
    20
  • C.
    23
  • B.
    22
  • D.
    26
  • Answer & Explanation
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Answer : [B]
Explanation :
This is an alternating number subtraction series: First, 2 is subtracted, then 4, then 2, and so on.
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18.
Look at this series: 22, 21, 23, 22, 24, 23, . . . What number should come next?
  • A.
    22
  • C.
    25
  • B.
    24
  • D.
    26
  • Answer & Explanation
  • Report
Answer : [C]
Explanation :
In this simple alternating subtraction and addition series;
1 is subtracted, then 2 is added, and so on.
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19.
Look at this series: 2, 1,
1
2
,
1
4
, ......What number should come next?    
  • [A] 1  
    3  
  • [C] 2  
    8  
  • [B] 1  
    8  
  • [D] 1  
    16  
  • Answer & Explanation
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Answer : [B]
Explanation :
This is a simple division series; each number is one-half of the previous number.
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20.
Look at this series: 2, 6, 18, 54, . . . What number should come next?
  • A.
    108
  • C.
    162
  • B.
    148
  • D.
    216
  • Answer & Explanation
  • Report
Answer : [C]
Explanation :
This is a simple multiplication series. Each number is 3 times more than the previous number.
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