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In the sequence 2, 6, 18, 54, 160, 486, which number is incorrect?

Competition practiceNumber Series

A160
B18
C54
D486

Step-by-Step Solution

Each term is 3 times the previous:

54 \times 3 = 162

, and

162 \times 3 = 486

. So 160 should be 162.

Answer: A) 160

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