Home > Practice > Verbal Reasoning > Series Completion > Miscellaneous
81. 32, 29, 26, 23, 20, 17, 14, ... choose which pair of numbers comes next?
Solution:
In this simple subtraction series, the numbers decrease by 3.
82. 16, 26, 56, 36, 46, 68, 56, ... choose which pair of numbers comes next?
Solution:
Here, every third number follows a different pattern from the main series. In the main series, beginning with 16, 10 is added to each number to arrive at the next. In the alternating series, beginning with 56, 12 is added to each number to arrive at the next.
83. 2, 44, 4, 41, 6, 38, 8, ... choose which pair of numbers comes next?
Solution:
Here, there are two alternating patterns, one addition and one subtraction. The first starts with 2 and increases by 2; the second starts with 44 and decreases by 3.
84. 17, 32, 19, 29, 21, 26, 23, ... choose which pair of numbers comes next?
Solution:
Here, there are two alternating patterns. The first begins with 17 and adds 2; the second begins with 32 and subtracts 3.
85. 17, 14, 14, 11, 11, 8, 8, ... choose which pair of numbers comes next?
Solution:
This is a simple addition series with repetition. It subtracted 3 to each number to arrive at the next, which is repeated before 3 is subtracted again.
86. 10, 34, 12, 31, 14, 28, 16, ... choose which pair of numbers comes next?
Solution:
Two patterns alternate here. The first pattern begins with 10 and adds 2 to each number to arrive at the next; the alternating pattern begins with 34 and subtracts 3 each time.
87. 11, 14, 14, 17, 17, 20, 20, ... choose which pair of numbers comes next?
Solution:
This is a simple addition series with repetition. It adds 3 to each number to arrive at the next, which is repeated before 3 is added again.
88. F2, __, D8, C16, B32 What number should fill the blank?
Solution:
The letters decrease by 1; the numbers are multiplied by 2.
89. 664, 332, 340, 170, ____, 89. What number should fill the blank?
Solution:
This is an alternating division and addition series: First, divide by 2, and then add 8.
90. V, VIII, XI, XIV, __, XX. What number should fill the blank?
Solution:
This is a simple addition series; each number is 3 more than the previous number.