Look carefully for the pattern, and then choose which pair of numbers comes next.
1.
28 25 5 21 18 5 14
A. 11 5 B. 10 7
C. 11 8 D. 5 10
E. 10 5
Answer & Explanation
Answer: Option A
Explanation:
This is an alternating subtraction series with the interpolation of a random number, 5, as every third number. In the subtraction series, 3 is subtracted, then 4, then 3, and so on.
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2.
8 11 21 15 18 21 22
A. 25 18 B. 25 21
C. 25 29 D. 24 21
E. 22 26
Answer & Explanation
Answer: Option B
Explanation:
This is an alternating addition series, with a random number, 21, interpolated as every third number. The addition series alternates between adding 3 and adding 4. The number 21 appears after each number arrived at by adding 3.
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3.
9 16 23 30 37 44 51
A. 59 66 B. 56 62
C. 58 66 D. 58 65
E. 54 61
Answer & Explanation
Answer: Option D
Explanation:
Here is a simple addition series, which begins with 9 and adds 7.
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4.
2 8 14 20 26 32 38
A. 2 46 B. 44 50
C. 42 48 D. 40 42
E. 32 26
Answer & Explanation
Answer: Option B
Explanation:
This is a simple addition series, which begins with 2 and adds 6.
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5.
9 11 33 13 15 33 17
A. 19 33 B. 33 35
C. 33 19 D. 15 33
E. 19 21
Answer & Explanation
Answer: Option A
Explanation:
In this alternating repetition series, a random number, 33, is interpolated every third number into a simple addition series, in which each number increases by 2.