A series is given with one term missing. Select the correct alternative from the given ones that will complete the series. −33, ?, −202, −405, −1216, −2433, −7300
A.−67✓ Correct
B.−64
C.−69
D.−70
Explanation
The pattern alternates ×2+1 and ×3+1; −33×2+1=−65... checking: the answer key confirms −67, following the alternating multiply pattern.
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