6, 18, 3, 21, 7, 56, ?
A. 8
B. 9
C. 63
D. 64
Answer: Option A
Solution (By Examveda Team)
Each term at an even place in the series is the product of its two adjacent terms.Thus, if the missing term be x, then we have : 7 x x = 56 or x = 56 ÷ 7 = 8.
This Question Belongs to Competitive Reasoning >> Series Completion
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