Number Series Questions and Answers
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Look carefully for the pattern, and then choose which pair of numbers comes next.
28 25 5 21 18 5 14
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.
8 11 21 15 18 21 22
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.
9 16 23 30 37 44 51
Answer & Explanation:
Answer: Option D
Explanation: Here is a simple addition series, which begins with 9 and adds 7.
2 8 14 20 26 32 38
Answer & Explanation:
Answer: Option B
Explanation: This is a simple addition series, which begins with 2 and adds 6.
9 11 33 13 15 33 17
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.
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