Number series (× and + alternating with growing addends): find the next term. Sequence given: 9, 27, 31, 155, 161, 1127, ? Identify the alternating operations and compute the next number. Choose the correct value.
Verbal Reasoning
Series Completion
Difficulty: Easy
Choose an option
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A316
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B1135
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C1288
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D2254
Answer
Correct Answer: 1135
Explanation
Pattern Multiply by an odd number, then add the next even number: ×3, +4, ×5, +6, ×7, +8, …
Apply 9 × 3 = 27; 27 + 4 = 31; 31 × 5 = 155; 155 + 6 = 161; 161 × 7 = 1127; 1127 + 8 = 1135.