11.
11 16 21 26 31 36 41
A. 47 52 B. 46 52
C. 45 49 D. 46 51
Answer & Explanation
Answer: Option D
Explanation:
In this simple addition series, each number is 5 more than the previous number.
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12.
3 8 13 18 23 28 33
A. 39 44 B. 38 44
C. 38 43 D. 37 42
E. 33 38
Answer & Explanation
Answer: Option C
Explanation:
In this simple addition series, each number is 5 greater than the previous number.
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13.
84 78 72 66 60 54 48
A. 44 34 B. 42 36
C. 42 32 D. 40 34
E. 38 32
Answer & Explanation
Answer: Option B
Explanation:
In this simple subtraction series, each number is 6 less than the previous number.
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14.
20 20 17 17 14 14 11
A. 8 8 B. 11 11
C. 11 14 D. 8 9
E. 11 8
Answer & Explanation
Answer: Option E
Explanation:
This is a simple subtraction with repetition series. It begins with 20, which is repeated, then 3 is subtracted, resulting in 17, which is repeated, and so on.
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15.
61 57 50 61 43 36 61
A. 29 61 B. 27 20
C. 31 61 D. 22 15
E. 29 22
Answer & Explanation
Answer: Option E
Explanation:
This is an alternating repetition series, in which a random number, 61, is interpolated as every third number into an otherwise simple subtraction series. Starting with the second number, 57, each number (except 61) is 7 less than the previous number.