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66, 36, 18, ?

  • A.3
  • B.6
  • C.8
  • D.9

Answer: C

Correct answer: 8

Each term is the product of the digits of the one before it: \( 6 \times 6 = 36 \), \( 3 \times 6 = 18 \), and then \[ 1 \times 8 = \mathbf{8} \]

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