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SSC MTS 2026 PYQ — Question 24

SSC MTS - 4 Feb 2026 - Shift 3 • Reasoning • Q24

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A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
-40, -81, -164, -329, -660, -1321, ?

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Correct answer: C

Explanation

−40×2−1=−81−81×2−2=−164−164×2−1=−329−329×2−2=−660−660×2−1=−1321−1321×2−2=−2644 \begin{aligned} -40 \times 2 - 1 &= -81 \\ -81 \times 2 - 2 &= -164 \\ -164 \times 2 - 1 &= -329 \\ -329 \times 2 - 2 &= -660 \\ -660 \times 2 - 1 &= -1321 \\ -1321 \times 2 - 2 &= -2644 \end{aligned}

Hence, ? = -2644